[REVIEW] Show pointer address for mem dump with corruption error

["Barry Naujok" <bnaujok@xxxxxxx>]

When XFS detects corruption, it prints a message and a small hex dump
of the offending code.

The first value in this hexdump currently is "0000000:" which is just
the offset into the pointer being passed to print_hex_dump().

The following patch changes this to display the address of the memory
dump:

--- a/fs/xfs/support/debug.c    2008-09-26 13:15:02.000000000 +1000
+++ b/fs/xfs/support/debug.c    2008-09-26 12:53:50.765134441 +1000
@@ -84,5 +84,5 @@ assfail(char *expr, char *file, int line
 void
 xfs_hex_dump(void *p, int length)
 {
-       print_hex_dump(KERN_ALERT, "", DUMP_PREFIX_OFFSET, 16, 1, p,  
length, 1);
+       print_hex_dump(KERN_ALERT, "", DUMP_PREFIX_ADDRESS, 16, 1, p,  
length, 1);
 }