MIPS: Fix preprocessor warnings flaged by GCC 4.4

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/include/asm/elf.h b/arch/mips/include/asm/elf.h
index a8eac16..d58f128 100644
--- a/arch/mips/include/asm/elf.h
+++ b/arch/mips/include/asm/elf.h
@@ -232,7 +232,7 @@
  */
 #ifdef __MIPSEB__
 #define ELF_DATA	ELFDATA2MSB
-#elif __MIPSEL__
+#elif defined(__MIPSEL__)
 #define ELF_DATA	ELFDATA2LSB
 #endif
 #define ELF_ARCH	EM_MIPS