crypto: ux500/hash - Enable DT probing of the driver

By providing an OF match table with a suitable compatible string, we
can ensure the ux500-hasht driver is probed by supplying an associated
DT node in a given platform's Device Tree.

Cc: linux-crypto@vger.kernel.org
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>