Both targets have their own idea of how to use ehci-fsl.
This patch reverts part of commit
68b8d3b0796d ("kernel: usb: add FSL EHCI package") and moves
ehci-fsl back into kmod-usb2, while also making it hopefully
useable for the mpc85xx target.
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>