The USB PHY Reset GPIO can be configured in the same place as the other GPIOs.

While at it rename the pin as BABBAGE_USB_PHY_RESET to make clearer its purpose.
Signed-off-by: NFabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: NSascha Hauer <s.hauer@pengutronix.de>