[MIPS] Add empty argument parenthesis to GCC_IMM_ASM

This is to clarify that GCC_IMM_ASM does not take an argument as the
context of the macro's invocation seems to imply.

As suggested by Maciej W. Rozycki (macro@linux-mips.org).

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/kernel/cpu-bugs64.c b/arch/mips/kernel/cpu-bugs64.c
index a1b48af..02b7713 100644
--- a/arch/mips/kernel/cpu-bugs64.c
+++ b/arch/mips/kernel/cpu-bugs64.c
@@ -38,7 +38,7 @@
 		".endr\n\t"
 		".set	pop"
 		:
-		: GCC_IMM_ASM(align), GCC_IMM_ASM(mod));
+		: GCC_IMM_ASM() (align), GCC_IMM_ASM() (mod));
 }
 
 static inline void mult_sh_align_mod(long *v1, long *v2, long *w,