[ARM] 5310/1: Fix cache flush functions for ARMv4

ARMv4 (ARM720T) cache flush functions are broken in 2.6.19+ kernels.
The issue was introduced by commit f12d0d7c
This patch corrects the CPU_CP15 ifdef statements so that they actually
do something.
Signed-off-by: Anders Grafström <grfstrm@users.sourceforge.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/mm/cache-v4.S

@@ -29,7 +29,7 @@ ENTRY(v4_flush_user_cache_all)
  *	Clean and invalidate the entire cache.
  */
 ENTRY(v4_flush_kern_cache_all)
-#ifdef CPU_CP15
+#ifdef CONFIG_CPU_CP15
 	mov	r0, #0
 	mcr	p15, 0, r0, c7, c7, 0		@ flush ID cache
 	mov	pc, lr
@@ -48,7 +48,7 @@ ENTRY(v4_flush_kern_cache_all)
  *	- flags	- vma_area_struct flags describing address space
  */
 ENTRY(v4_flush_user_cache_range)
-#ifdef CPU_CP15
+#ifdef CONFIG_CPU_CP15
 	mov	ip, #0
 	mcreq	p15, 0, ip, c7, c7, 0		@ flush ID cache
 	mov	pc, lr
@@ -116,7 +116,7 @@ ENTRY(v4_dma_inv_range)
  *	- end	 - virtual end address
  */
 ENTRY(v4_dma_flush_range)
-#ifdef CPU_CP15
+#ifdef CONFIG_CPU_CP15
 	mov	r0, #0
 	mcr	p15, 0, r0, c7, c7, 0		@ flush ID cache
 #endif