arm64: mediatek: Add MT8173 SoC Kconfig and defconfig

Add MT8173 arm64 Kconfig and defconfig files

Signed-off-by: Eddie Huang <eddie.huang@mediatek.com>
Acked-by: Arnd Bergmann <arnd at arndb.de>
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
2 files changed