input: qti-haptics: Clear PLAY bit after all pattern is played

Clear the PLAY bit only after all pattern bytes are queued to make sure
the whole pattern can be played successfully.

Change-Id: I891e5e46168420c6e4963d67bc77c0f79b2a4a8c
Signed-off-by: Fenglin Wu <fenglinw@codeaurora.org>