[ARM] pxa: move memory controller registers into pxa2xx-regs.h

PXA3 has a different memory controller from PXA2 platforms.  Avoid
clashing definitions by moving the PXA2 definitions to pxa2xx-regs.h

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/mach-pxa/cpu-pxa.c b/arch/arm/mach-pxa/cpu-pxa.c
index 18d042b..cbc583b 100644
--- a/arch/arm/mach-pxa/cpu-pxa.c
+++ b/arch/arm/mach-pxa/cpu-pxa.c
@@ -39,6 +39,7 @@
 
 #include <asm/hardware.h>
 #include <asm/arch/pxa-regs.h>
+#include <asm/arch/pxa2xx-regs.h>
 
 #ifdef DEBUG
 static unsigned int freq_debug;