ARM: dts: am57xx: sbc-am57x: fix UART3 pinmux

Fix UART3 pinmux.

Signed-off-by: Dmitry Lifshitz <lifshitz@compulab.co.il>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/boot/dts/am57xx-sbc-am57x.dts

@@ -25,8 +25,8 @@
 &dra7_pmx_core {
 	uart3_pins_default: uart3_pins_default {
 		pinctrl-single,pins = <
-			DRA7XX_CORE_IOPAD(0x37f8, PIN_INPUT_SLEW | MUX_MODE2)	/* uart2_ctsn.uart3_rxd */
+			DRA7XX_CORE_IOPAD(0x3648, PIN_INPUT_SLEW | MUX_MODE0)	/* uart3_rxd */
-			DRA7XX_CORE_IOPAD(0x37fc, PIN_INPUT_SLEW | MUX_MODE1)	/* uart2_rtsn.uart3_txd */
+			DRA7XX_CORE_IOPAD(0x364c, PIN_INPUT_SLEW | MUX_MODE0)	/* uart3_txd */
 		>;
 	};