feat(drtm): add remediation driver support in DRTM

Added remediation driver for DRTM to set/get the error
from non-volatile memory

Change-Id: I8f0873dcef4936693e0f39a3c95096cb689c04b7
Signed-off-by: Manish V Badarkhe <Manish.Badarkhe@arm.com>
Signed-off-by: Lucian Paul-Trifu <lucian.paultrifu@gmail.com>
diff --git a/services/std_svc/drtm/drtm_remediation.h b/services/std_svc/drtm/drtm_remediation.h
new file mode 100644
index 0000000..8f965f1
--- /dev/null
+++ b/services/std_svc/drtm/drtm_remediation.h
@@ -0,0 +1,15 @@
+/*
+ * Copyright (c) 2022 Arm Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier:    BSD-3-Clause
+ *
+ */
+#ifndef DRTM_REMEDIATION_H
+#define DRTM_REMEDIATION_H
+
+uint64_t drtm_set_error(uint64_t x1, void *ctx);
+uint64_t drtm_get_error(void *ctx);
+
+void drtm_enter_remediation(uint64_t error_code, const char *error_str);
+
+#endif /* DRTM_REMEDIATION_H */