ARM: multi_v7_defconfig: make eSDHC driver built-in

Sometimes root file system is deployed on SD card. It's
proper to build eSDHC driver into kernel.

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Olof Johansson <olof@lixom.net>

arch/arm/configs/multi_v7_defconfig

@@ -712,7 +712,7 @@ CONFIG_MMC_SDHCI=y
 CONFIG_MMC_SDHCI_PLTFM=y
 CONFIG_MMC_SDHCI_OF_ARASAN=y
 CONFIG_MMC_SDHCI_OF_AT91=y
-CONFIG_MMC_SDHCI_OF_ESDHC=m
+CONFIG_MMC_SDHCI_OF_ESDHC=y
 CONFIG_MMC_SDHCI_ESDHC_IMX=y
 CONFIG_MMC_SDHCI_DOVE=y
 CONFIG_MMC_SDHCI_TEGRA=y