Crypto: Implement additional PSA Crypto APIs

This patch implements additional missing APIs available
in the PSA Crypto API headers.

Change-Id: I453f6829ed2c87a47546514becda599ecd1273a4
Signed-off-by: Antonio de Angelis <antonio.deangelis@arm.com>
diff --git a/secure_fw/services/crypto/CMakeLists.inc b/secure_fw/services/crypto/CMakeLists.inc
index f5910a8..fafbd30 100644
--- a/secure_fw/services/crypto/CMakeLists.inc
+++ b/secure_fw/services/crypto/CMakeLists.inc
@@ -48,6 +48,8 @@
                     "${CRYPTO_DIR}/crypto_mac.c"
                     "${CRYPTO_DIR}/crypto_key.c"
                     "${CRYPTO_DIR}/crypto_aead.c"
+                    "${CRYPTO_DIR}/crypto_asymmetric.c"
+                    "${CRYPTO_DIR}/crypto_generator.c"
                     "${CRYPTO_DIR}/tfm_crypto_secure_api.c"
       )