tests/functional: Re-activate the check-venv target

Add check-venv target as a dependency for the functional tests. This
causes Python modules listed in pythondeps.toml, under the testdeps
group, to be installed when 'make check-functional{-<ARCH>}' is executed
to prepare and run the functional tests.

Suggested-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Gustavo Romero <gustavo.romero@linaro.org>
Message-ID: <20251003141820.85278-2-gustavo.romero@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>

tests/Makefile.include

@@ -105,11 +105,11 @@ check-venv: $(TESTS_VENV_TOKEN)
 
 FUNCTIONAL_TARGETS=$(patsubst %-softmmu,check-functional-%, $(filter %-softmmu,$(TARGETS)))
 .PHONY: $(FUNCTIONAL_TARGETS)
-$(FUNCTIONAL_TARGETS):
+$(FUNCTIONAL_TARGETS): check-venv
 	@$(MAKE) SPEED=thorough $(subst -functional,-func,$@)
 
 .PHONY: check-functional
-check-functional:
+check-functional: check-venv
 	@$(NINJA) precache-functional
 	@QEMU_TEST_NO_DOWNLOAD=1 $(MAKE) SPEED=thorough check-func check-func-quick