[ARM] pxa: add missing pin function for CS2 on GPIO1

Signed-off-by: Daniel Mack <daniel@caiaq.de>
Signed-off-by: Eric Miao <eric.miao@marvell.com>

arch/arm/mach-pxa/include/mach/mfp-pxa300.h

@@ -41,6 +41,7 @@
 #endif
 
 /* Chip Select */
+#define GPIO1_nCS2		MFP_CFG(GPIO1,	AF1)
 #define GPIO2_nCS3		MFP_CFG(GPIO2,  AF1)
 
 /* AC97 */