pinctrl: mvebu: dove: reuse mpp_{set,get} in pmu callbacks
pinctrl: mvebu: dove: reuse mpp_{set,get} in pmu callbacks

Dove has pins that can be switched between normal and pmu functions.
Rework pmu_mpp callbacks to reuse default mpp ctrl helpers.

Signed-off-by: Sebastian Hesselbarth <1d402fe89ace836b52164ed4c0f247cb6f80efc1@gmail.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs