[ARM] 4674/1: pxa: increase LCD PCLK drive strength to fast 2mA for PXA300/PXA310

Some platforms (e.g. Littleton) requires LCD PCLK drive strength to be
higher than default to cope with the fast PCLK frequency.
Signed-off-by: eric miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

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

@@ -179,7 +179,7 @@
 #define GPIO62_LCD_CS_N		MFP_CFG_DRV(GPIO62, AF2, DS01X)
 #define GPIO72_LCD_FCLK		MFP_CFG_DRV(GPIO72, AF1, DS01X)
 #define GPIO73_LCD_LCLK		MFP_CFG_DRV(GPIO73, AF1, DS01X)
-#define GPIO74_LCD_PCLK		MFP_CFG_DRV(GPIO74, AF1, DS01X)
+#define GPIO74_LCD_PCLK		MFP_CFG_DRV(GPIO74, AF1, DS02X)
 #define GPIO75_LCD_BIAS		MFP_CFG_DRV(GPIO75, AF1, DS01X)
 #define GPIO76_LCD_VSYNC	MFP_CFG_DRV(GPIO76, AF2, DS01X)