suit: Fix not working SHA-512

This fixes the error causing manifests with SHA-512 installation
failure.

Signed-off-by: Artur Hadasz <[email protected]>

Author: ahasztag

subsys/suit/platform/src/suit_plat_digest.c

@@ -22,6 +22,9 @@ int suit_plat_check_digest(enum suit_cose_alg alg_id, struct zcbor_string *diges
 	case suit_cose_sha256:
 		psa_alg = PSA_ALG_SHA_256;
 		break;
+	case suit_cose_sha512:
+		psa_alg = PSA_ALG_SHA_512;
+		break;
 	default:
 		LOG_ERR("Unsupported digest algorithm: %d", alg_id);
 		return SUIT_ERR_DECODING;

subsys/suit/stream/Kconfig

@@ -118,6 +118,7 @@ endif # SUIT_STREAM_SINK_SDFW_RECOVERY
 config SUIT_STREAM_SINK_DIGEST
 	bool "Enable digest sink"
 	select PSA_WANT_ALG_SHA_256 if SOC_FAMILY_NORDIC_NRF
+	imply PSA_WANT_ALG_SHA_512 if SOC_FAMILY_NORDIC_NRF
 
 if SUIT_STREAM_SINK_DIGEST
 	config SUIT_STREAM_SINK_DIGEST_CONTEXT_COUNT