crypto: msm: Fix failure in qce_close

CE clk needs to be enabled when invoking sps_exit.  Further
more, memory allocated for pipe FIFOs should not be de-allocated
before calling sps_exit, as it is still referenced in sps_exit.

Change-Id: I66cbd7d92ed7ad74d5b4eca23fe3a327501b2e1b
Signed-off-by: Mona Hossain <mhossain@codeaurora.org>