wandboard: Fix wand_reserve function for any wandboard version
(cherry picked from commit f77f22601e4f4bcbf3e14a48266a4fe3fa56e6e0)
wandboard: modify mipi-csi to ipu mux setting

It appears that the default code copied from Freescale routes parallel CSI
to IPU1, which is the IPU that we are using for MIPI-CSI.  Change the route
from parallel to MIPI