mx23evk: Add splash screen support

Enable display support.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
diff --git a/board/freescale/mx23evk/mx23evk.c b/board/freescale/mx23evk/mx23evk.c
index 41ba303..d25e2b3 100644
--- a/board/freescale/mx23evk/mx23evk.c
+++ b/board/freescale/mx23evk/mx23evk.c
@@ -43,6 +43,12 @@
 	/* SSP0 clock at 96MHz */
 	mxs_set_sspclk(MXC_SSPCLK0, 96000, 0);
 
+	/* Power on LCD */
+	gpio_direction_output(MX23_PAD_LCD_RESET__GPIO_1_18, 1);
+
+	/* Set contrast to maximum */
+	gpio_direction_output(MX23_PAD_PWM2__GPIO_1_28, 1);
+
 	return 0;
 }