drm/ttm/tests: Require MMU when testing

Satisfy MMU dependency when testing TTM with KUnit. This fixes
compilation errors on platforms that don't select this option
by default.

Signed-off-by: Karolina Stolarek <[email protected]>
Reported-by: kernel test robot <[email protected]>
Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/
Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/
Reviewed-by: Christian König <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
Signed-off-by: Christian König <[email protected]>
(cherry picked from commit 78f46ec)
Signed-off-by: Thomas Zimmermann <[email protected]>

Author: drobnik

drivers/gpu/drm/Kconfig

@@ -198,7 +198,7 @@ config DRM_TTM
 config DRM_TTM_KUNIT_TEST
         tristate "KUnit tests for TTM" if !KUNIT_ALL_TESTS
         default n
-        depends on DRM && KUNIT
+        depends on DRM && KUNIT && MMU
         select DRM_TTM
         select DRM_EXPORT_FOR_TESTS if m
         select DRM_KUNIT_TEST_HELPERS