usb: chipidea: msm: Use device-managed registration API

Use devm_reset_controller_register to get rid
of manual unregistration.

Signed-off-by: Chuhong Yuan <hslester96@gmail.com>
Link: https://lore.kernel.org/r/20190902014323.27588-1-hslester96@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>