silence an annoying x86 warning

SVN-Revision: 31293

target/linux/generic/patches-2.6.32/033-x86_unused_variables.patch

@@ -0,0 +1,11 @@
+--- a/arch/x86/include/asm/percpu.h
++++ b/arch/x86/include/asm/percpu.h
+@@ -76,7 +76,7 @@ extern void __bad_percpu_size(void);
+ do {							\
+ 	typedef typeof(var) T__;			\
+ 	if (0) {					\
+-		T__ tmp__;				\
++		T__ tmp__ __maybe_unused;		\
+ 		tmp__ = (val);				\
+ 	}						\
+ 	switch (sizeof(var)) {				\