Switch from handling gpio-vbus in pxa25x_udc to using standard gpio-vbus
tranceiver.
Signed-off-by: NDmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Cc: Steve Sakoman <sakoman@gmail.com>
Signed-off-by: NEric Miao <eric.y.miao@gmail.com>