MIPS: tlbex: Fix GCC 4.6.0 build error

  CC      arch/mips/mm/tlbex.o
arch/mips/mm/tlbex.c: In function 'build_r4000_tlb_refill_handler':
arch/mips/mm/tlbex.c:1155:22: error: variable 'vmalloc_mode' set but not used [-Werror=unused-but-set-variable]
arch/mips/mm/tlbex.c:1154:28: error: variable 'htlb_info' set but not used [-Werror=unused-but-set-variable]
cc1: all warnings being treated as errors

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/mm/tlbex.c b/arch/mips/mm/tlbex.c
index 5ef294f..f5734c2 100644
--- a/arch/mips/mm/tlbex.c
+++ b/arch/mips/mm/tlbex.c
@@ -1151,8 +1151,8 @@
 	struct uasm_reloc *r = relocs;
 	u32 *f;
 	unsigned int final_len;
-	struct mips_huge_tlb_info htlb_info;
-	enum vmalloc64_mode vmalloc_mode;
+	struct mips_huge_tlb_info htlb_info __maybe_unused;
+	enum vmalloc64_mode vmalloc_mode __maybe_unused;
 
 	memset(tlb_handler, 0, sizeof(tlb_handler));
 	memset(labels, 0, sizeof(labels));