[MIPS] Change names of local variables to silence sparse (part 2)

This patch is an workaround for these sparse warnings:

include2/asm/mmu_context.h:172:2: warning: symbol 'flags' shadows an earlier one
include2/asm/mmu_context.h:133:16: originally declared here
include2/asm/mmu_context.h:232:2: warning: symbol 'flags' shadows an earlier one
include2/asm/mmu_context.h:203:16: originally declared here
include2/asm/mmu_context.h:277:3: warning: symbol 'flags' shadows an earlier one
include2/asm/mmu_context.h:250:16: originally declared here

Signed-off-by: Atsushi Nemoto <[e-mail]>
Signed-off-by: Ralf Baechle <[e-mail]>

include/asm-mips/mipsregs.h

···
  */
 #define __read_64bit_c0_split(source, sel)				\
 ({									\
-	unsigned long long val;						\
-	unsigned long flags;						\
+	unsigned long long __val;					\
+	unsigned long __flags;						\
 									\
-	local_irq_save(flags);						\
+	local_irq_save(__flags);					\
 	if (sel == 0)							\
 		__asm__ __volatile__(					\
 			".set\tmips64\n\t"				\
···
 			"dsrl\t%M0, %M0, 32\n\t"			\
 			"dsrl\t%L0, %L0, 32\n\t"			\
 			".set\tmips0"					\
-			: "=r" (val));					\
+			: "=r" (__val));				\
 	else								\
 		__asm__ __volatile__(					\
 			".set\tmips64\n\t"				\
···
 			"dsrl\t%M0, %M0, 32\n\t"			\
 			"dsrl\t%L0, %L0, 32\n\t"			\
 			".set\tmips0"					\
-			: "=r" (val));					\
-	local_irq_restore(flags);					\
+			: "=r" (__val));				\
+	local_irq_restore(__flags);					\
 									\
-	val;								\
+	__val;								\
 })
 
 #define __write_64bit_c0_split(source, sel, val)			\
 do {									\
-	unsigned long flags;						\
+	unsigned long __flags;						\
 									\
-	local_irq_save(flags);						\
+	local_irq_save(__flags);					\
 	if (sel == 0)							\
 		__asm__ __volatile__(					\
 			".set\tmips64\n\t"				\
···
 			"dmtc0\t%L0, " #source ", " #sel "\n\t"		\
 			".set\tmips0"					\
 			: : "r" (val));					\
-	local_irq_restore(flags);					\
+	local_irq_restore(__flags);					\
 } while (0)
 
 #define read_c0_index()		__read_32bit_c0_register($0, 0)