linux-phytec-ti

crypto: ks2: add low level crypto hardware interface code

The driver is based on TI SA Low Level Driver (LLD). This commit introduces
the keystone-sa-lld.c file, which re-implements/copies number of helper
functions provided by LLD.

Keystone SA module performs transformation accordingly to command sequence
corresponding to required transformation algorithm. Those sequences are
provided by TI as binary format as so called mci table and therefore has
to be loaded to the driver as firmware. This commit also adds a function
to load mci table.

Signed-off-by: Vitaly Andrianov <vitalya@ti.com>
Signed-off-by: Jacob Stiffler <j-stiffler@ti.com>