USB: ohci-nxp: add usbd and otg clock initialization

The ohci-nxp was assuming the clock was enabled by the board init or
bootloader and just enabling the pll. This enables the usbd and otg
clocks this periferal also needs.

Signed-off-by: Alexandre Pereira da Silva <aletes.xgr@gmail.com>
Acked-by: Roland Stigge <stigge@antcom.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>