input: bu21150: do not set frame waitq flag in unblock ioctl

Unblock and unblock_release ioctl calls are called
in sequence by ESD recovery routine in HAL. So the
frame waitq flag is not needed to be set in unblock
ioctl.

Change-Id: I029a902945365c84f752123d5d34b5f5c991a584
Signed-off-by: Mohan Pallaka <mpallaka@codeaurora.org>