[ARM] Add linux/compiler.h includes where required

atomic.h, bitops.h and mmu_context.h are using likely/unlikely.
thread_info.h uses __attribute_const__.  Hence these files require
linux/compiler.h to be included.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

include/asm-arm/atomic.h

@@ -12,6 +12,7 @@
 #define __ASM_ARM_ATOMIC_H
 
 #include <linux/config.h>
+#include <linux/compiler.h>
 
 typedef struct { volatile int counter; } atomic_t;
 

include/asm-arm/bitops.h

@@ -19,6 +19,7 @@
 
 #ifdef __KERNEL__
 
+#include <linux/compiler.h>
 #include <asm/system.h>
 
 #define smp_mb__before_clear_bit()	mb()

include/asm-arm/mmu_context.h

@@ -13,6 +13,7 @@
 #ifndef __ASM_ARM_MMU_CONTEXT_H
 #define __ASM_ARM_MMU_CONTEXT_H
 
+#include <linux/compiler.h>
 #include <asm/cacheflush.h>
 #include <asm/proc-fns.h>
 

include/asm-arm/thread_info.h

@@ -12,6 +12,7 @@
 
 #ifdef __KERNEL__
 
+#include <linux/compiler.h>
 #include <asm/fpstate.h>
 
 #define THREAD_SIZE_ORDER	1