crypto: Fix byte order alignment on data packets.

Crypto cipher/authentication operation yields incorrect results.
Although the operation is succesfull, the resulting data bytes
seems to be incorrect. The data input/outout needs to be
configured to be in little endian format.

The fix is to set the LITTLE ENDIAN flag in the CRYPTO_CONFIG
register, after configuring the crypto hardware registers and
prior to setting the GO_PROC register. This way, the little
endian format kicks in for the the data descriptor transfer
only, resulting in correct order in which bytes are input and
output.

Signed-off-by: Ramesh Masavarapu <rameshm@codeaurora.org>