Add t_cose library as external component

To support signing of cbor encoded attestation reports, the
t_cose library has been added as an external component.  To
verify the external component, it has been included in
the component-test build.

Signed-off-by: Julian Hall <julian.hall@arm.com>
Signed-off-by: Gyorgy Szing <gyorgy.szing@arm.com>
Change-Id: I1cff695b1efd01090be1e51b769f7615703d5184
diff --git a/deployments/component-test/component-test.cmake b/deployments/component-test/component-test.cmake
index e731538..8f5610b 100644
--- a/deployments/component-test/component-test.cmake
+++ b/deployments/component-test/component-test.cmake
@@ -104,6 +104,10 @@
 include(${TS_ROOT}/external/qcbor/qcbor.cmake)
 target_link_libraries(component-test PRIVATE qcbor)
 
+# t_cose
+include(${TS_ROOT}/external/t_cose/t_cose.cmake)
+target_link_libraries(component-test PRIVATE t_cose)
+
 #-------------------------------------------------------------------------------
 #  Define install content.
 #