ARM: MediaTek: Add support for MediaTek MT8512 SoC

Add support for MediaTek MT8512 SoC. This include the file
that will initialize the SoC after boot and its device tree.

diff --git a/arch/arm/mach-mediatek/mt8512/Makefile b/arch/arm/mach-mediatek/mt8512/Makefile
new file mode 100644
index 0000000..007eb4a
--- /dev/null
+++ b/arch/arm/mach-mediatek/mt8512/Makefile
@@ -0,0 +1,4 @@
+# SPDX-License-Identifier:	GPL-2.0
+
+obj-y += init.o
+obj-y += lowlevel_init.o