phy: exynos5-usbdrd: Add facility for VBUS-BOOST-5V supply
phy: exynos5-usbdrd: Add facility for VBUS-BOOST-5V supply

Some Exynos boards have a separate regulator controlling a
Boost 5V supply which goes as input for VBUS regulator.
So adding a control for the same in driver, to enable
vbus supply on the port.

Signed-off-by: Vivek Gautam <5c6bd423a2e3d98ebdccbc25654ed1942ee0af9f@samsung.com>
Signed-off-by: Kishon Vijay Abraham I <c224db9378a929ae8338a052bbb1b30fb46cdd39@ti.com>

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