tty: msm_serial_hs: Implement SERIAL_MSM_HS_NO_DMA_WAKELOCK

* Workaround to allow deep sleeping when bluetooth is on

Change-Id: I7e33d885804959b2d1c9ef4d105bc5db150ae373
Signed-off-by: Michael Bestas <mikeioannina@gmail.com>
defconfigs: mogami: Enable SERIAL_MSM_HS_NO_DMA_WAKELOCK

Change-Id: I9eafef391d8bc4335a8fb91b2d1156fc8b84aed8