ARM: update multi_v7_defconfig for STI

This patch enables SDHCI STI platform driver.

Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Maxime Coquelin <maxime.coquelin@st.com>
diff --git a/arch/arm/configs/multi_v7_defconfig b/arch/arm/configs/multi_v7_defconfig
index 929296f..19436b6 100644
--- a/arch/arm/configs/multi_v7_defconfig
+++ b/arch/arm/configs/multi_v7_defconfig
@@ -313,6 +313,7 @@
 CONFIG_MMC_SDHCI_S3C=y
 CONFIG_MMC_SDHCI_S3C_DMA=y
 CONFIG_MMC_SDHCI_BCM_KONA=y
+CONFIG_MMC_SDHCI_ST=y
 CONFIG_MMC_OMAP=y
 CONFIG_MMC_OMAP_HS=y
 CONFIG_MMC_MVSDIO=y