serial: msm_serial_hs: Remove wakelock.h inclusion

linux/wakelock.h file is removed recently. Don't include
this header.

Change-Id: I215fdb9a2cb1bef185babe95b130f2ccc3fb7026
Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>
1 file changed