x86/mm: Decouple <linux/vmalloc.h> from <asm/io.h>

Nothing in <asm/io.h> uses anything from <linux/vmalloc.h>, so
remove it from there and fix up the resulting build problems
triggered on x86 {64|32}-bit {def|allmod|allno}configs.

The breakages were triggering in places where x86 builds relied
on vmalloc() facilities but did not include <linux/vmalloc.h>
explicitly and relied on the implicit inclusion via <asm/io.h>.

Also add:

- <linux/init.h> to <linux/io.h>
- <asm/pgtable_types> to <asm/io.h>

... which were two other implicit header file dependencies.

Suggested-by: David Miller <[e-mail]>
Signed-off-by: Stephen Rothwell <[e-mail]>
[ Tidied up the changelog. ]
Acked-by: David Miller <[e-mail]>
Acked-by: Takashi Iwai <[e-mail]>
Acked-by: Viresh Kumar <[e-mail]>
Acked-by: Vinod Koul <[e-mail]>
Cc: Andrew Morton <[e-mail]>
Cc: Anton Vorontsov <[e-mail]>
Cc: Boris Ostrovsky <[e-mail]>
Cc: Colin Cross <[e-mail]>
Cc: David Vrabel <[e-mail]>
Cc: H. Peter Anvin <[e-mail]>
Cc: Haiyang Zhang <[e-mail]>
Cc: James E.J. Bottomley <[e-mail]>
Cc: Jaroslav Kysela <[e-mail]>
Cc: K. Y. Srinivasan <[e-mail]>
Cc: Kees Cook <[e-mail]>
Cc: Konrad Rzeszutek Wilk <[e-mail]>
Cc: Kristen Carlson Accardi <[e-mail]>
Cc: Len Brown <[e-mail]>
Cc: Linus Torvalds <[e-mail]>
Cc: Peter Zijlstra <[e-mail]>
Cc: Rafael J. Wysocki <[e-mail]>
Cc: Suma Ramars <[e-mail]>
Cc: Thomas Gleixner <[e-mail]>
Cc: Tony Luck <[e-mail]>
Signed-off-by: Ingo Molnar <[e-mail]>

arch/x86/include/asm/io.h

···
 #include <linux/compiler.h>
 #include <asm/page.h>
 #include <asm/early_ioremap.h>
+#include <asm/pgtable_types.h>
 
 #define build_mmio_read(name, size, type, reg, barrier) \
 static inline type name(const volatile void __iomem *addr) \
···
 #ifdef __KERNEL__
 
 #include <asm-generic/iomap.h>
-
-#include <linux/vmalloc.h>
 
 /*
  * Convert a virtual cached pointer to an uncached pointer

arch/x86/kernel/crash.c

···
 #include <linux/elfcore.h>
 #include <linux/module.h>
 #include <linux/slab.h>
+#include <linux/vmalloc.h>
 
 #include <asm/processor.h>
 #include <asm/hardirq.h>

arch/x86/kernel/machine_kexec_64.c

···
 #include <linux/ftrace.h>
 #include <linux/io.h>
 #include <linux/suspend.h>
+#include <linux/vmalloc.h>
 
 #include <asm/init.h>
 #include <asm/pgtable.h>

arch/x86/mm/pageattr-test.c

···
 #include <linux/random.h>
 #include <linux/kernel.h>
 #include <linux/mm.h>
+#include <linux/vmalloc.h>
 
 #include <asm/cacheflush.h>
 #include <asm/pgtable.h>

arch/x86/mm/pageattr.c

···
 #include <linux/percpu.h>
 #include <linux/gfp.h>
 #include <linux/pci.h>
+#include <linux/vmalloc.h>
 
 #include <asm/e820.h>
 #include <asm/processor.h>

arch/x86/xen/p2m.c

···
 #include <linux/seq_file.h>
 #include <linux/bootmem.h>
 #include <linux/slab.h>
+#include <linux/vmalloc.h>
 
 #include <asm/cache.h>
 #include <asm/setup.h>

drivers/acpi/apei/erst.c

···
 #include <linux/nmi.h>
 #include <linux/hardirq.h>
 #include <linux/pstore.h>
+#include <linux/vmalloc.h>
 #include <acpi/apei.h>
 
 #include "apei-internal.h"

drivers/cpufreq/intel_pstate.c

···
 #include <linux/fs.h>
 #include <linux/debugfs.h>
 #include <linux/acpi.h>
+#include <linux/vmalloc.h>
 #include <trace/events/power.h>
 
 #include <asm/div64.h>

drivers/dma/mic_x100_dma.c

···
 #include <linux/module.h>
 #include <linux/io.h>
 #include <linux/seq_file.h>
+#include <linux/vmalloc.h>
 
 #include "mic_x100_dma.h"
 

drivers/net/hyperv/netvsc.c

···
 #include <linux/slab.h>
 #include <linux/netdevice.h>
 #include <linux/if_ether.h>
+#include <linux/vmalloc.h>
 #include <asm/sync_bitops.h>
 
 #include "hyperv_net.h"

drivers/net/hyperv/rndis_filter.c

···
 #include <linux/netdevice.h>
 #include <linux/if_vlan.h>
 #include <linux/nls.h>
+#include <linux/vmalloc.h>
 
 #include "hyperv_net.h"
 

drivers/scsi/fnic/fnic_debugfs.c

···
 #include <linux/module.h>
 #include <linux/errno.h>
 #include <linux/debugfs.h>
+#include <linux/vmalloc.h>
 #include "fnic.h"
 
 static struct dentry *fnic_trace_debugfs_root;

drivers/scsi/fnic/fnic_trace.c

···
 #include <linux/spinlock.h>
 #include <linux/kallsyms.h>
 #include <linux/time.h>
+#include <linux/vmalloc.h>
 #include "fnic_io.h"
 #include "fnic.h"
 

include/linux/io.h

···
 #define _LINUX_IO_H
 
 #include <linux/types.h>
+#include <linux/init.h>
 #include <asm/io.h>
 #include <asm/page.h>
 

sound/pci/asihpi/hpioctl.c

···
 #include <linux/pci.h>
 #include <linux/stringify.h>
 #include <linux/module.h>
+#include <linux/vmalloc.h>
 
 #ifdef MODULE_FIRMWARE
 MODULE_FIRMWARE("asihpi/dsp5000.bin");