Add attestation key management

Adds component to manage access and creation of the IAK.  Allows
for factory provisioned and generate-on-first-run strategies.
Extended the attestation reporter tests to use the key manager
to allow the signed report to be verified.

Signed-off-by: Julian Hall <julian.hall@arm.com>
Change-Id: I01e126a8a18a7b3d24a0b322885aa9e558070250
diff --git a/components/service/attestation/key_mngr/component.cmake b/components/service/attestation/key_mngr/component.cmake
new file mode 100644
index 0000000..722d4f5
--- /dev/null
+++ b/components/service/attestation/key_mngr/component.cmake
@@ -0,0 +1,13 @@
+#-------------------------------------------------------------------------------
+# Copyright (c) 2021, Arm Limited and Contributors. All rights reserved.
+#
+# SPDX-License-Identifier: BSD-3-Clause
+#
+#-------------------------------------------------------------------------------
+if (NOT DEFINED TGT)
+	message(FATAL_ERROR "mandatory parameter TGT is not defined.")
+endif()
+
+target_sources(${TGT} PRIVATE
+	"${CMAKE_CURRENT_LIST_DIR}/attest_key_mngr.c"
+	)