tf-psa-crypto: Add cmake_package test program

We cannot add the equivalent of
cmake_package_install yet as the build in
tf-psa-crypto still references some headers
in ./include/mbedtls like mbedtls_config.h.

We cannot add the equivalent of
cmake_subproject yet as currently only
the case of the Mbed TLS parent project is
supported.

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
diff --git a/tests/scripts/components-build-system.sh b/tests/scripts/components-build-system.sh
index 5467b60..3047e76 100644
--- a/tests/scripts/components-build-system.sh
+++ b/tests/scripts/components-build-system.sh
@@ -143,6 +143,27 @@
     fi
 }
 
+component_test_tf_psa_crypto_cmake_as_package () {
+    # Remove existing generated files so that we use the ones CMake
+    # generates
+    make neat
+
+    msg "build: cmake 'as-package' build"
+    root_dir="$(pwd)"
+    cd tf-psa-crypto/programs/test/cmake_package
+    build_variant_dir="$(pwd)"
+    cmake .
+    make
+    ./cmake_package
+    if [[ "$OSTYPE" == linux* ]]; then
+        PKG_CONFIG_PATH="${build_variant_dir}/tf-psa-crypto/pkgconfig" \
+        ${root_dir}/tests/scripts/pkgconfig.sh \
+        tfpsacrypto
+        # This is the EXPECTED package name. Renaming it could break consumers
+        # of pkg-config, consider carefully.
+    fi
+}
+
 support_test_cmake_as_package () {
     support_test_cmake_out_of_source
 }