[ARM] pxa: fix the incorrect naming of AC97 reset pin config for pxa26x

GPIO89_AC97_nRESET is really a PXA26x specific option and was
incorrectly named.
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>

arch/arm/mach-pxa/include/mach/mfp-pxa25x.h

@@ -169,7 +169,6 @@
 #define GPIO86_nSDCS2		MFP_CFG_OUT(GPIO86, AF0, DRIVE_HIGH)
 #define GPIO87_nSDCS3		MFP_CFG_OUT(GPIO87, AF0, DRIVE_HIGH)
 #define GPIO88_RDnWR		MFP_CFG_OUT(GPIO88, AF0, DRIVE_HIGH)
-#define GPIO89_nACRESET		MFP_CFG_OUT(GPIO89, AF0, DRIVE_HIGH)
 
 /* USB */
 #define GPIO9_USB_RCV		MFP_CFG_IN(GPIO9, AF1)
@@ -186,6 +185,9 @@
 #define GPIO30_ASSP_TXD		MFP_CFG_OUT(GPIO30, AF3, DRIVE_LOW)
 #define GPIO31_ASSP_SFRM_IN	MFP_CFG_IN(GPIO31, AF1)
 #define GPIO31_ASSP_SFRM_OUT	MFP_CFG_OUT(GPIO31, AF3, DRIVE_LOW)
-#endif
+
+/* AC97 */
+#define GPIO89_AC97_nRESET	MFP_CFG_OUT(GPIO89, AF0, DRIVE_HIGH)
+#endif	/* CONFIG_CPU_PXA26x */
 
 #endif /* __ASM_ARCH_MFP_PXA25X_H */