crypto: aspeed: Add AST2600 ACRY support

ACRY is designed to accelerate ECC/RSA digital signature
generation and verification.

Signed-off-by: Chia-Wei Wang <chiawei_wang@aspeedtech.com>
diff --git a/drivers/crypto/aspeed/Kconfig b/drivers/crypto/aspeed/Kconfig
index 471c06f..9bf3171 100644
--- a/drivers/crypto/aspeed/Kconfig
+++ b/drivers/crypto/aspeed/Kconfig
@@ -8,3 +8,13 @@
 	  Enabling this allows the use of SHA operations in hardware without
 	  requiring the SHA software implementations. It also improves performance
 	  and saves code size.
+
+config ASPEED_ACRY
+	bool "ASPEED RSA and ECC Engine"
+	depends on ASPEED_AST2600
+	help
+	 Select this option to enable a driver for using the RSA/ECC engine in
+	 the ASPEED BMC SoCs.
+
+	 Enabling this allows the use of RSA/ECC operations in hardware without requiring the
+	 software implementations. It also improves performance and saves code size.