[MIPS] checkfiles: Fix "need space after that ','" errors.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/include/asm-mips/pgtable-32.h b/include/asm-mips/pgtable-32.h
index 59c865d..a094709 100644
--- a/include/asm-mips/pgtable-32.h
+++ b/include/asm-mips/pgtable-32.h
@@ -140,7 +140,7 @@
 #define pgd_index(address)	(((address) >> PGDIR_SHIFT) & (PTRS_PER_PGD-1))
 
 /* to find an entry in a page-table-directory */
-#define pgd_offset(mm,addr)	((mm)->pgd + pgd_index(addr))
+#define pgd_offset(mm, addr)	((mm)->pgd + pgd_index(addr))
 
 /* Find an entry in the third-level page table.. */
 #define __pte_offset(address)						\