mx6sabresd: Fix LVDS width and color format

mx6sabresd boards have a 18-bit LVDS data width and the correct color format
is RGB666.

Suggested-by: Liu Ying <Ying.Liu@freescale.com>
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>

board/freescale/mx6sabresd/mx6sabresd.c

@@ -294,15 +294,15 @@ static void enable_lvds(struct display_info_t const *dev)
 	struct iomuxc *iomux = (struct iomuxc *)
 				IOMUXC_BASE_ADDR;
 	u32 reg = readl(&iomux->gpr[2]);
-	reg |= IOMUXC_GPR2_DATA_WIDTH_CH0_24BIT |
-	       IOMUXC_GPR2_DATA_WIDTH_CH1_24BIT;
+	reg |= IOMUXC_GPR2_DATA_WIDTH_CH0_18BIT |
+	       IOMUXC_GPR2_DATA_WIDTH_CH1_18BIT;
 	writel(reg, &iomux->gpr[2]);
 }
 
 static struct display_info_t const displays[] = {{
 	.bus	= -1,
 	.addr	= 0,
-	.pixfmt	= IPU_PIX_FMT_LVDS666,
+	.pixfmt	= IPU_PIX_FMT_RGB666,
 	.detect	= NULL,
 	.enable	= enable_lvds,
 	.mode	= {