crypto: msm: Fix failure on XTS mode

XTs mode of operation fails with a crash or hangs in some cases.
This failure is due to numerous reason:
- CRYPTO_XTS_DU_SIZE address is incorrect resulting
  in not setting the register correctly
- xts_du_size command list pointer was NULL. This results in
  the operation crashing due to dereferenciong of a NULL pointer
- XTS KEY register was not set correctly, resulting in
  incorrect results for encrypt/decrypt operation

After fixing the above XTS mode of operation is passing.

Change-Id: I1cfcfaf0ecae61510d3d4372c49a412d65d7bc40
Signed-off-by: Mona Hossain <mhossain@codeaurora.org>