fix(intel): reject non 4-byte align request size for FPGA Crypto Service (FCS)

This patch is to add size checking to make sure that
each certificate and encryption/decryption request
are 4-byte align as this driver is expecting. Unaligned
size may indicate invalid/corrupted request hence will
be rejected.

Signed-off-by: Abdul Halim, Muhammad Hadi Asyrafi <muhammad.hadi.asyrafi.abdul.halim@intel.com>
Signed-off-by: Sieu Mun Tang <sieu.mun.tang@intel.com>
Change-Id: Ib6f97849ec470e45679c5adc4fbfa3afd10eda90