crypto: inside-secure/eip93 - acquire lock on eip93_put_descriptor hash

In the EIP93 HASH functions, the eip93_put_descriptor is called without
acquiring lock. This is problematic when multiple thread execute hash
operations.

Correctly acquire ring write lock on calling eip93_put_descriptor to
prevent concurrent access and mess with the ring pointers.

Fixes: 9739f5f9 ("crypto: eip93 - Add Inside Secure SafeXcel EIP-93 crypto engine support")
Reported-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>