phy: phy-mtk-tphy: use clock bulk to get clocks

Use clock bulk helpers to get/enable/disable clocks

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Link: https://lore.kernel.org/r/1629191987-20774-2-git-send-email-chunfeng.yun@mediatek.com


Signed-off-by: Vinod Koul <vkoul@kernel.org>