board: sunxi: Use generic-phy for board_usb_cable_connected

Allwinner PHY USB code is now part of generic-phy framework,
so use it in board_usb_cable_connected.

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Acked-by: Jun Nie <jun.nie@linaro.org>
1 file changed