crypto:msm: Increase descriptor FIFO size

The Current BAM descriptor FIFO is set to 512 bytes and
can accomodate 32 descriptor entries (each entry being 8 bytes
and pointing to a unique sg entry from the sg list). There
exists clienta that can issue a scatter gather list with
more than 32 entries.

Increasing the size to accomodate a max of 1024  entries
allows driver to process all clients request successfully.

Change-Id: Ide111de0ef001642543c503574b7f080185f9c8b
Signed-off-by: Mona Hossain <mhossain@codeaurora.org>