arm:exynos4:pinmux: Modify the gpio function for mmc

This patch add pinmux settings for Exynos4 for mmc0 and mmc2

Signed-off-by: Piotr Wilczek <p.wilczek@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
diff --git a/arch/arm/include/asm/arch-exynos/periph.h b/arch/arm/include/asm/arch-exynos/periph.h
index b861d7d..082611c 100644
--- a/arch/arm/include/asm/arch-exynos/periph.h
+++ b/arch/arm/include/asm/arch-exynos/periph.h
@@ -42,6 +42,7 @@
 	PERIPH_ID_SDMMC1,
 	PERIPH_ID_SDMMC2,
 	PERIPH_ID_SDMMC3,
+	PERIPH_ID_SDMMC4,
 	PERIPH_ID_SROMC,
 	PERIPH_ID_UART0,
 	PERIPH_ID_UART1,