m68knommu: disable cache early in startup for ColdFire

Disbale the CPU cache really early in the ColdFire startup code. We set
up some variables for RAM sizing and we want to make they stick in RAM.
Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>

arch/m68k/platform/coldfire/head.S

@@ -143,6 +143,9 @@ __HEAD
 _start:
 	nop					/* filler */
 	movew	#0x2700, %sr			/* no interrupts */
+	movel	#CACHE_INIT,%d0			/* disable cache */
+	movec	%d0,%CACR
+	nop
 #if defined(CONFIG_UBOOT)
 	movel	%sp,_init_sp			/* save initial stack pointer */
 #endif
@@ -176,9 +179,6 @@ _start:
 	 *	it is very similar. Define the exact settings in the headers
 	 *	then the code here is the same for all.
 	 */
-	movel	#CACHE_INIT,%d0			/* invalidate whole cache */
-	movec	%d0,%CACR
-	nop
 	movel	#ACR0_MODE,%d0			/* set RAM region for caching */
 	movec	%d0,%ACR0
 	movel	#ACR1_MODE,%d0			/* anything else to cache? */