arm64: defconfig: Enable samsung serial and mmc

This patch update defconfig, adds samsung serial and
Synopsys Designware MMC configs related to exynos SoC

Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
1 file changed