ARM: OMAP4: Add put/get sync clocks in setwakeenable

Need to add the clock calls to the setwakeupenable GPIO functions
as on 4430 when going to idle the IRQ enable register is trying to
be accessed with clocks off causing a kernel panic.

Change-Id: Ia01ea21ff8674a4f48263addfc3bcc7b8475f17c
Signed-off-by: Dan Murphy <dmurphy@ti.com>

Conflicts:
	drivers/gpio/gpio-omap.c