ARM: pxa/cm-x300: fix V3020 RTC functionality

While in sleep mode the CS# and other V3020 RTC GPIOs must be driven
high, otherwise V3020 RTC fails to keep the right time in sleep mode.
Signed-off-by: NIgor Grinberg <grinberg@compulab.co.il>
Cc: stable@kernel.org
Signed-off-by: NEric Miao <eric.y.miao@gmail.com>

arch/arm/mach-pxa/cm-x300.c

@@ -161,10 +161,10 @@ static mfp_cfg_t cm_x3xx_mfp_cfg[] __initdata = {
 	GPIO99_GPIO,			/* Ethernet IRQ */
 
 	/* RTC GPIOs */
-	GPIO95_GPIO,			/* RTC CS */
-	GPIO96_GPIO,			/* RTC WR */
-	GPIO97_GPIO,			/* RTC RD */
-	GPIO98_GPIO,			/* RTC IO */
+	GPIO95_GPIO | MFP_LPM_DRIVE_HIGH,	/* RTC CS */
+	GPIO96_GPIO | MFP_LPM_DRIVE_HIGH,	/* RTC WR */
+	GPIO97_GPIO | MFP_LPM_DRIVE_HIGH,	/* RTC RD */
+	GPIO98_GPIO,				/* RTC IO */
 
 	/* Standard I2C */
 	GPIO21_I2C_SCL,