clk: mediatek: add support to configure clock driver parent

This patch adds support for a clock node to configure its parent clock
where possible.

Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Daniel Golle <daniel@makrotopia.org>
Signed-off-by: Weijie Gao <weijie.gao@mediatek.com>
2 files changed