[nrf toup] modules: tfm: Override the TF-M MBEDCRYPTO_PATH

The TF-M build is passed a path to the mbedtls project
directory, however, NCS has its own mbedtls variant. When
building with TF-M we use a generator expression to allow
setting the path to mbedtls from nrf_security.

Signed-off-by: Frank Audun Kvamtrø <frank.kvamtro@nordicsemi.no>
Signed-off-by: Ioannis Glaropoulos <Ioannis.Glaropoulos@nordicsemi.no>

modules/trusted-firmware-m/CMakeLists.txt

@@ -183,7 +183,7 @@ function(trusted_firmware_build)
       ${PSA_TEST_ARG}
       ${TFM_CMAKE_ARGS}
       -DTFM_TEST_REPO_PATH=${ZEPHYR_TRUSTED_FIRMWARE_M_MODULE_DIR}/tf-m-tests
-      -DMBEDCRYPTO_PATH=${ZEPHYR_TRUSTED_FIRMWARE_M_MODULE_DIR}/../../crypto/mbedtls/mbedtls
+      -DMBEDCRYPTO_PATH=$<IF:$<BOOL:$<TARGET_PROPERTY:zephyr_property_target,TFM_MBEDCRYPTO_PATH>>,$<TARGET_PROPERTY:zephyr_property_target,TFM_MBEDCRYPTO_PATH>,${ZEPHYR_TRUSTED_FIRMWARE_M_MODULE_DIR}/../../crypto/mbedtls/mbedtls>
       -DMCUBOOT_PATH=${ZEPHYR_TRUSTED_FIRMWARE_M_MODULE_DIR}/../tfm-mcuboot
       -DPSA_ARCH_TESTS_PATH=${ZEPHYR_TRUSTED_FIRMWARE_M_MODULE_DIR}/psa-arch-tests
       -DZEPHYR_BASE=${ZEPHYR_BASE}