mx53smd: Use gpio_direction_input prior to gpio_get_value

Use gpio_direction_input prior to gpio_get_value.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
diff --git a/board/freescale/mx53smd/mx53smd.c b/board/freescale/mx53smd/mx53smd.c
index e273192..c237980 100644
--- a/board/freescale/mx53smd/mx53smd.c
+++ b/board/freescale/mx53smd/mx53smd.c
@@ -135,6 +135,7 @@
 int board_mmc_getcd(struct mmc *mmc)
 {
 	mxc_request_iomux(MX53_PIN_EIM_DA13, IOMUX_CONFIG_ALT1);
+	gpio_direction_input(77);
 	return !gpio_get_value(77); /* GPIO3_13 */
 }