tqma6_mba6: Remove UART board code

With DM_SERIAL in place, there is no need to setup the UART pins
in the board code.

The UART pins are setup via devicetree, thanks to DM.

Remove the unneeded code.

Signed-off-by: Fabio Estevam <festevam@denx.de>
diff --git a/arch/arm/dts/imx6qdl-mba6-u-boot.dtsi b/arch/arm/dts/imx6qdl-mba6-u-boot.dtsi
index 78457ef..c8c0fc1 100644
--- a/arch/arm/dts/imx6qdl-mba6-u-boot.dtsi
+++ b/arch/arm/dts/imx6qdl-mba6-u-boot.dtsi
@@ -10,6 +10,22 @@
 	};
 };
 
+&aips2 {
+	bootph-all;
+};
+
+&pinctrl_uart2 {
+	bootph-all;
+};
+
+&soc {
+	bootph-all;
+};
+
+&uart2 {
+	bootph-all;
+};
+
 &wdog1 {
 	bootph-pre-ram;
 };
diff --git a/board/tq/tqma6/tqma6_mba6.c b/board/tq/tqma6/tqma6_mba6.c
index 7267d81..b8f7659 100644
--- a/board/tq/tqma6/tqma6_mba6.c
+++ b/board/tq/tqma6/tqma6_mba6.c
@@ -31,9 +31,6 @@
 
 #include "tqma6_bb.h"
 
-#define UART_PAD_CTRL  (PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED | \
-	PAD_CTL_DSE_80ohm   | PAD_CTL_SRE_FAST  | PAD_CTL_HYS)
-
 #if defined(CONFIG_TQMA6Q)
 
 #define IOMUX_SW_PAD_CTRL_GRP_DDR_TYPE_RGMII	0x02e0790
@@ -70,17 +67,6 @@
 		     (void *)IOMUX_SW_PAD_CTRL_GRP_DDR_TYPE_RGMII);
 }
 
-static iomux_v3_cfg_t const mba6_uart2_pads[] = {
-	NEW_PAD_CTRL(MX6_PAD_SD4_DAT4__UART2_RX_DATA, UART_PAD_CTRL),
-	NEW_PAD_CTRL(MX6_PAD_SD4_DAT7__UART2_TX_DATA, UART_PAD_CTRL),
-};
-
-static void mba6_setup_iomuxc_uart(void)
-{
-	imx_iomux_v3_setup_multiple_pads(mba6_uart2_pads,
-					 ARRAY_SIZE(mba6_uart2_pads));
-}
-
 int board_mmc_get_env_dev(int devno)
 {
 	/*
@@ -140,8 +126,6 @@
 
 int tqma6_bb_board_early_init_f(void)
 {
-	mba6_setup_iomuxc_uart();
-
 	return 0;
 }