M28: Fix LCD PINMUX

The LCD pins configuration was wrong in U-Boot, configure pins properly.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Detlev Zundel <dzu@denx.de>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Fabio Estevam <festevam@gmail.com>

board/denx/m28evk/spl_boot.c

@@ -31,7 +31,7 @@
 #include <asm/arch/sys_proto.h>
 
 #define	MUX_CONFIG_LED	(MXS_PAD_3V3 | MXS_PAD_4MA | MXS_PAD_NOPULL)
-#define	MUX_CONFIG_LCD	(MXS_PAD_3V3 | MXS_PAD_4MA)
+#define	MUX_CONFIG_LCD	(MXS_PAD_3V3 | MXS_PAD_4MA | MXS_PAD_NOPULL)
 #define	MUX_CONFIG_TSC	(MXS_PAD_3V3 | MXS_PAD_8MA | MXS_PAD_PULLUP)
 #define	MUX_CONFIG_SSP0	(MXS_PAD_3V3 | MXS_PAD_12MA | MXS_PAD_PULLUP)
 #define	MUX_CONFIG_SSP2	(MXS_PAD_3V3 | MXS_PAD_4MA | MXS_PAD_PULLUP)
@@ -68,15 +68,8 @@ const iomux_cfg_t iomux_setup[] = {
 	MX28_PAD_LCD_D21__LCD_D21 | MUX_CONFIG_LCD,
 	MX28_PAD_LCD_D22__LCD_D22 | MUX_CONFIG_LCD,
 	MX28_PAD_LCD_D23__LCD_D23 | MUX_CONFIG_LCD,
-	MX28_PAD_LCD_RD_E__LCD_VSYNC | MUX_CONFIG_LCD,
-	MX28_PAD_LCD_WR_RWN__LCD_HSYNC | MUX_CONFIG_LCD,
-	MX28_PAD_LCD_RS__LCD_DOTCLK | MUX_CONFIG_LCD,
-	MX28_PAD_LCD_CS__LCD_CS | MUX_CONFIG_LCD,
-	MX28_PAD_LCD_VSYNC__LCD_VSYNC | MUX_CONFIG_LCD,
-	MX28_PAD_LCD_HSYNC__LCD_HSYNC | MUX_CONFIG_LCD,
 	MX28_PAD_LCD_DOTCLK__LCD_DOTCLK | MUX_CONFIG_LCD,
-	MX28_PAD_LCD_ENABLE__GPIO_1_31 | MUX_CONFIG_LCD,
-	MX28_PAD_LCD_RESET__GPIO_3_30 | MUX_CONFIG_LCD,
+	MX28_PAD_LCD_ENABLE__LCD_ENABLE | MUX_CONFIG_LCD,
 
 	/* UART1 */
 	MX28_PAD_PWM0__DUART_RX,