This patch add general-purpose timer support for MediaTek MT7981/MT7986. These two SoCs uses a newer version of timer with its register definition slightly changed. Reviewed-by: Simon Glass <sjg@chromium.org> Tested-by: Daniel Golle <daniel@makrotopia.org> Signed-off-by: Weijie Gao <weijie.gao@mediatek.com>