powerpc/85xx: add aliases for usb nodes on t4240, b4860, and b4420

Add usb aliases for consistency with the other platforms.

Signed-off-by: Laurentiu Tudor <Laurentiu.Tudor@freescale.com>
Signed-off-by: Sriram Dash <sriram.dash@nxp.com>
Signed-off-by: Scott Wood <oss@buserror.net>

powerpc/85xx: Add first usb controller node for Qonverge platforms

Add first usb controller node for qonverge qoriq platforms like
B4860, etc

Signed-off-by: Ramneek Mehresh <ramneek.mehresh@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>