ARM: sbc35_a9g20: re-add MACH_TYPE_SBC35_A9G20

MACH_TYPE_SBC35_A9G20 was removed from mach-types.h.
Add it to the board config file.

Signed-off-by: Anatolij Gustschin <agust@denx.de>
Acked-by: Simon Glass <sjg@chromium.org>
2 files changed