clk: meson-g12b: add compatible

The G12B clock controller is almost identical to the G12A and
so far the differences don't matter.  Adding the G12B compatible
makes USB work on the Odroid-N2.

Signed-off-by: Mark Kettenis <kettenis@openbsd.org>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
1 file changed