Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/drivers/gpu/drm/selftests/Makefile b/drivers/gpu/drm/selftests/Makefile
index 9fc349f..aae88f8 100644
--- a/drivers/gpu/drm/selftests/Makefile
+++ b/drivers/gpu/drm/selftests/Makefile
@@ -1 +1,6 @@
-obj-$(CONFIG_DRM_DEBUG_SELFTEST) += test-drm_mm.o test-drm-helper.o
+# SPDX-License-Identifier: GPL-2.0-only
+test-drm_modeset-y := test-drm_modeset_common.o test-drm_plane_helper.o \
+                      test-drm_format.o test-drm_framebuffer.o \
+		      test-drm_damage_helper.o
+
+obj-$(CONFIG_DRM_DEBUG_SELFTEST) += test-drm_mm.o test-drm_modeset.o test-drm_cmdline_parser.o