arch: hexagon: kernel: hexagon_ksyms.c: export related symbols which various modules need

Need export all related functions and symbols for various modules with
allmodconfig. The related errors:

MODPOST 2879 modules
ERROR: "__vmyield" [sound/sound_firmware.ko] undefined!
ERROR: "__phys_offset" [sound/drivers/snd-dummy.ko] undefined!
ERROR: "ioremap_nocache" [drivers/char/ipmi/ipmi_si.ko] undefined!
ERROR: "__iounmap" [drivers/char/ipmi/ipmi_si.ko] undefined!
...

For including files, need "linux/*" first, then "asm/*". All related
included files and symbols need be sorted by alphabetical order.

Signed-off-by: Chen Gang <[e-mail]>
Signed-off-by: Richard Kuo <[e-mail]>

arch/hexagon/kernel/hexagon_ksyms.c

···
  * 02110-1301, USA.
  */
 
+#include <linux/dma-mapping.h>
 #include <asm/hexagon_vm.h>
+#include <asm/io.h>
 #include <asm/uaccess.h>
 
+/* Additional functions */
+EXPORT_SYMBOL(__clear_user_hexagon);
 EXPORT_SYMBOL(__copy_from_user_hexagon);
 EXPORT_SYMBOL(__copy_to_user_hexagon);
+EXPORT_SYMBOL(__iounmap);
+EXPORT_SYMBOL(__strnlen_user);
 EXPORT_SYMBOL(__vmgetie);
 EXPORT_SYMBOL(__vmsetie);
+EXPORT_SYMBOL(__vmyield);
+EXPORT_SYMBOL(empty_zero_page);
+EXPORT_SYMBOL(ioremap_nocache);
 EXPORT_SYMBOL(memcpy);
 EXPORT_SYMBOL(memset);
+
+/* Additional variables */
+EXPORT_SYMBOL(__phys_offset);
+EXPORT_SYMBOL(_dflt_cache_att);
+EXPORT_SYMBOL(bad_dma_address);
 
 #define DECLARE_EXPORT(name)     \
 	extern void name(void); EXPORT_SYMBOL(name)
···
 /* Symbols found in libgcc that assorted kernel modules need */
 DECLARE_EXPORT(__hexagon_memcpy_likely_aligned_min32bytes_mult8bytes);
 
-DECLARE_EXPORT(__hexagon_divsi3);
-DECLARE_EXPORT(__hexagon_modsi3);
-DECLARE_EXPORT(__hexagon_udivsi3);
-DECLARE_EXPORT(__hexagon_umodsi3);
+/* Additional functions */
+DECLARE_EXPORT(__divsi3);
+DECLARE_EXPORT(__modsi3);
+DECLARE_EXPORT(__udivsi3);
+DECLARE_EXPORT(__umodsi3);
+DECLARE_EXPORT(csum_tcpudp_magic);