arm64: defconfig: Enable Synopsys DWC MSHC driver

Enable the driver SDHCI support for the Synopsys DWC MSHC
controller which can be found on Rockchip 356x SoCs.

Cc: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Anand Moon <linux.amoon@gmail.com>
Link: https://lore.kernel.org/r/20220922192050.2031-1-linux.amoon@gmail.comSigned-off-by: Heiko Stuebner <heiko@sntech.de>

arch/arm64/configs/defconfig

@@ -914,6 +914,7 @@ CONFIG_MMC_SDHCI=y
 CONFIG_MMC_SDHCI_ACPI=y
 CONFIG_MMC_SDHCI_PLTFM=y
 CONFIG_MMC_SDHCI_OF_ARASAN=y
+CONFIG_MMC_SDHCI_OF_DWCMSHC=y
 CONFIG_MMC_SDHCI_OF_ESDHC=y
 CONFIG_MMC_SDHCI_CADENCE=y
 CONFIG_MMC_SDHCI_ESDHC_IMX=y