Add USB2.0 phy driver for Sunplus SP7021
Signed-off-by: Vincent Shih <vincent.sunplus@gmail.com>
Link: https://lore.kernel.org/r/1658717052-26142-2-git-send-email-vincent.sunplus@gmail.com
[vkoul: remove trailing line in driver file]
Signed-off-by: Vinod Koul <vkoul@kernel.org>