Add USB clock information, the pll_usb_main_clk is USB_PLL at CCM
which is the output of USBOTG2 PHY.
Signed-off-by: NPeter Chen <peter.chen@freescale.com>
Signed-off-by: NIrina Tirdea <irina.tirdea@nxp.com>
Signed-off-by: NAbel Vesa <abel.vesa@nxp.com>
Signed-off-by: NStephen Boyd <sboyd@kernel.org>