dm: hash: Add new UCLASS_HASH support

Add UCLASS_HASH for hash driver development. Thus the
hash drivers (SW or HW-accelerated) can be developed
in the DM-based fashion.

Signed-off-by: Chia-Wei Wang <chiawei_wang@aspeedtech.com>
diff --git a/drivers/crypto/Makefile b/drivers/crypto/Makefile
index efbd1d3..4a12b56 100644
--- a/drivers/crypto/Makefile
+++ b/drivers/crypto/Makefile
@@ -6,3 +6,4 @@
 obj-$(CONFIG_EXYNOS_ACE_SHA)	+= ace_sha.o
 obj-y += rsa_mod_exp/
 obj-y += fsl/
+obj-y += hash/