board-msm7627-regulator: update/add regulators for MAX8899

New regulators are used by camera sensor drivers.
msm_camera: implement legacy camera support for Samsung msm7x27 devices

Enable CONFIG_MSM_CAMERA_LEGACY to use legacy camera drivers.
drivers/media/msm: add Samsung msm7x27 camera sensor drivers

Note: vreg -> regulator code modified in all drivers;
      only sr200pc10 driver has been compile-tested.
Samsung msm7x27: fix Bluetooth/Bluesleep
galaxy5: disable some kernel log spam

Disable keypad event & panel brightness debugging output.