[ARM] pxa/littleton: add UART3 GPIO config

Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
diff --git a/arch/arm/mach-pxa/littleton.c b/arch/arm/mach-pxa/littleton.c
index f28c171..fa527b2 100644
--- a/arch/arm/mach-pxa/littleton.c
+++ b/arch/arm/mach-pxa/littleton.c
@@ -110,6 +110,12 @@
 	GPIO7_MMC1_CLK,
 	GPIO8_MMC1_CMD,
 	GPIO15_GPIO, /* card detect */
+
+	/* UART3 */
+	GPIO107_UART3_CTS,
+	GPIO108_UART3_RTS,
+	GPIO109_UART3_TXD,
+	GPIO110_UART3_RXD,
 };
 
 static struct resource smc91x_resources[] = {