PCI: hotplug: Clean up include files

arch/powerpc/include/asm/prom.h includes some headers that it doesn't need
itself. Add the missing headers to files that include prom.h so we can
remove them from prom.h.

Link: https://lore.kernel.org/r/79201f5f[e-mail]
Signed-off-by: Christophe Leroy <[e-mail]>
Signed-off-by: Bjorn Helgaas <[e-mail]>

drivers/pci/hotplug/pnv_php.c

···
 #include <linux/module.h>
 #include <linux/pci.h>
 #include <linux/pci_hotplug.h>
+#include <linux/of_fdt.h>
 
 #include <asm/opal.h>
 #include <asm/pnv-pci.h>

drivers/pci/hotplug/rpadlpar_core.c

···
 
 #include <linux/init.h>
 #include <linux/module.h>
+#include <linux/of.h>
 #include <linux/pci.h>
 #include <linux/string.h>
 #include <linux/vmalloc.h>

drivers/pci/hotplug/rpaphp_core.c

···
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/moduleparam.h>
+#include <linux/of.h>
 #include <linux/pci.h>
 #include <linux/pci_hotplug.h>
 #include <linux/smp.h>
···
 #include <asm/eeh.h>       /* for eeh_add_device() */
 #include <asm/rtas.h>		/* rtas_call */
 #include <asm/pci-bridge.h>	/* for pci_controller */
+#include <asm/prom.h>
 #include "../pci.h"		/* for pci_add_new_bus */
 				/* and pci_do_scan_bus */
 #include "rpaphp.h"

drivers/pci/hotplug/rpaphp_pci.c

···
  * Send feedback to <[e-mail]>
  *
  */
+#include <linux/of.h>
 #include <linux/pci.h>
 #include <linux/string.h>
 

drivers/pci/hotplug/rpaphp_slot.c

···
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/sysfs.h>
+#include <linux/of.h>
 #include <linux/pci.h>
 #include <linux/string.h>
 #include <linux/slab.h>