qseecom: improve app_block_wq processing

remove interrupt signal mask before waiting, and
Wake up all threads waiting in app_block_wq.

Bug: 133120616
Bug: 133128687

Change-Id: I0b441c2fd8a4f829c356492a8facd56f92c97884
Signed-off-by: Zhen Kong <zkong@codeaurora.org>
1 file changed