xfs: print useful caller information in xfs_error_report

xfs_error_report used to just print the hex address of the caller;
%pF will give us something more human-readable.
Signed-off-by: NEric Sandeen <sandeen@redhat.com>
Reviewed-by: NJie Liu <jeff.liu@oracle.com>
Signed-off-by: NDave Chinner <david@fromorbit.com>

fs/xfs/xfs_error.c

@@ -156,7 +156,7 @@ xfs_error_report(
 {
 	if (level <= xfs_error_level) {
 		xfs_alert_tag(mp, XFS_PTAG_ERROR_REPORT,
-		"Internal error %s at line %d of file %s.  Caller 0x%p",
+		"Internal error %s at line %d of file %s.  Caller %pF",
 			    tag, linenum, filename, ra);
 
 		xfs_stack_trace();