build: Allow bypassing the tf-m-tests version checks

Introduce the CMake variable TFM_TESTS_REVISION_CHECKS to allow not
performing the revision checks in the tf-m-tests repo.
This is needed for TF-M forks where the upstream tags are not found,
which makes the build fail.

Change-Id: I10371841925f9fb811f0d47a2e0dc2c9e8e7cfac
Signed-off-by: Tomi Fontanilles <tomi.fontanilles@nordicsemi.no>
(cherry picked from commit e8c39da8faf2c825a1cbe61ea9fb3b5789555d2b)
Signed-off-by: Tomi Fontanilles <tomi.fontanilles@nordicsemi.no>

Author: tomi-font

config/config_base.cmake

@@ -30,6 +30,8 @@ set(INSTALL_PLATFORM_NS_DIR             ${CMAKE_INSTALL_PREFIX}/platform)
 set(TFM_DEBUG_SYMBOLS                   ON          CACHE BOOL      "Add debug symbols. Note that setting CMAKE_BUILD_TYPE to Debug or RelWithDebInfo will also add debug symbols.")
 set(TFM_CODE_COVERAGE                   OFF         CACHE BOOL      "Whether to build the binary for lcov tools")
 
+set(TFM_TESTS_REVISION_CHECKS           ON          CACHE BOOL      "Whether to perform checks on the tf-m-tests repository revision.")
+
 set(PROJECT_CONFIG_HEADER_FILE          ""          CACHE FILEPATH  "User defined header file for TF-M config")
 
 # External libraries source and version

config/spe_config.cmake.in

@@ -76,3 +76,4 @@ set(TFM_VERSION                            @TFM_VERSION@)
 set(TFM_NS_MANAGE_NSID                     @TFM_NS_MANAGE_NSID@)
 
 set(RECOMMENDED_TFM_TESTS_VERSION          @TFM_TESTS_VERSION@)
+set(CHECK_TFM_TESTS_VERSION                @TFM_TESTS_REVISION_CHECKS@)