usb: phy: tegra: Move utmip_pad_count checking under lock

It's unlikely that two drivers could manage PHY's state simultaneously in
practice, nevertheless the utmip_pad_count checking should be under lock,
for consistency.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Link: https://lore.kernel.org/r/20200106013416.9604-16-digetx@gmail.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>