[ARM] 3364/1: [cleanup] warning fix - definitions for enable_hlt and disable_hlt

Patch from Ben Dooks

The enable_hlt and disable_hlt should be declared in
include/asm/setup.h. This fixes sparse errors from
arch/arm/kernel/process.c

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/include/asm-arm/system.h b/include/asm-arm/system.h
index eb2de8c..ec91d1f 100644
--- a/include/asm-arm/system.h
+++ b/include/asm-arm/system.h
@@ -415,6 +415,9 @@
 	return ret;
 }
 
+extern void disable_hlt(void);
+extern void enable_hlt(void);
+
 #endif /* __ASSEMBLY__ */
 
 #define arch_align_stack(x) (x)