Crypto wrapper and test changes

Crypto wrapper and test changes

Includes:
1) Splitting up of crypto tests into different files to take care
of supported crypto mode in requires

2) Adding appropriate supported crypto modes to individual platform
files so that only supported modes for each platform are imported into
testlink.

3) Removing cryptos from omap5-evm platform file since no hardware crypto
mode is supported on that platform.

4) Modifying crypto wrapper to take care of additional errors which can
be ignored.

5) Removing crypto in runtest/ddt since test cases are now split
into separate files as in 1) above.

Tested on am335x-evm and dra7xx-evm.

Signed-off-by: Aparna Balasubramanian <aparnab@ti.com>
Signed-off-by: Yan Liu <yan-liu@ti.com>