misc: mrvl_init: Clock enable and reset gpio handling for marvell wifi chip.

Signed-off-by: Matus Ujhelyi <matus.ujhelyi@streamunlimited.com>
Signed-off-by: Marek Belisko <marek.belisko@streamunlimited.com>
[adapted to v3.18 and enabled in config]
Signed-off-by: Radek Dostal <radek.dostal@streamunlimited.com>