Revert "msm: sps: Support low memory condition in SPS driver"

In low memory conditions BAM DMUX is getting time out while allocating
memory through kzalloc.Add Flag support in kzalloc while allocating
memory and avoid delay during memory allocation.

Additional flag added is resulting in error instead of timeout
Reverting change I01bad1642ea9f38ffd723b51ccb8addcd3efbbcf as the issue
is not solved. Commit id 1ac9b940a1e33a8cba64d4d5932944c752af154c.

Change-Id: I64257d30f5f694a212a43ff2ef02d4529b894942
Signed-off-by: Rama Krishna Phani A <rphani@codeaurora.org>
Signed-off-by: Sridhar Gujje <sgujje@codeaurora.org>
Signed-off-by: Bharat Pawar <bpawar@codeaurora.org>