UPSTREAM: phy: rockchip-usb: fix clock get-put mismatch

UPSTREAM: phy: rockchip-usb: fix clock get-put mismatch

Currently the phy driver only gets the optional clock reference but
never puts it again, neither during error handling nor on remove.
Fix that by moving the clk_put to a devm-action that gets called at
the right time when all other devm actions are done.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
(cherry picked from commit 75d390fecf9e69eebca7f15de40d761e33fcfd7b)

Change-Id: I976d5a49448febdb7da5b5c35455c708bfc83899