drm: add missing MODULE_DESCRIPTION() macros

On x86, make allmodconfig && make W=1 C=1 reports:
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/gpu/drm/gud/gud.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/gpu/drm/drm_panel_orientation_quirks.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/gpu/drm/drm_mipi_dbi.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/gpu/drm/i915/kvmgt.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/gpu/drm/udl/udl.o

Add the missing invocation of the MODULE_DESCRIPTION() macro to all
files which have a MODULE_LICENSE().

For consistency this includes drivers/gpu/drm/drm_simple_kms_helper.c
since it contains a MODULE_LICENSE() even though it isn't built as a
separate module -- it is always built as part of drm_kms_helper and
drm_kms_helper_common.c already provides a MODULE_DESCRIPTION for that
module.

Signed-off-by: Jeff Johnson <[e-mail]>
Signed-off-by: Maxime Ripard <[e-mail]>
Link: https://patchwork.freedesktop.org/patch/msgid/[e-mail]

drivers/gpu/drm/drm_mipi_dbi.c

···
 
 #endif
 
+MODULE_DESCRIPTION("MIPI Display Bus Interface (DBI) LCD controller support");
 MODULE_LICENSE("GPL");

drivers/gpu/drm/drm_panel_orientation_quirks.c

···
 
 #endif
 
+MODULE_DESCRIPTION("Quirks for non-normal panel orientation");
 MODULE_LICENSE("Dual MIT/GPL");

drivers/gpu/drm/drm_simple_kms_helper.c

···
 }
 EXPORT_SYMBOL(drm_simple_display_pipe_init);
 
+MODULE_DESCRIPTION("Helpers for drivers for simple display hardware");
 MODULE_LICENSE("GPL");

drivers/gpu/drm/gud/gud_drv.c

···
 module_usb_driver(gud_usb_driver);
 
 MODULE_AUTHOR("Noralf Trønnes");
+MODULE_DESCRIPTION("GUD USB Display driver");
 MODULE_LICENSE("Dual MIT/GPL");

drivers/gpu/drm/i915/gvt/kvmgt.c

···
 module_init(kvmgt_init);
 module_exit(kvmgt_exit);
 
+MODULE_DESCRIPTION("Intel mediated pass-through framework for KVM");
 MODULE_LICENSE("GPL and additional rights");
 MODULE_AUTHOR("Intel Corporation");

drivers/gpu/drm/udl/udl_drv.c

···
 	.id_table = id_table,
 };
 module_usb_driver(udl_driver);
+MODULE_DESCRIPTION("KMS driver for the USB displaylink video adapters");
 MODULE_LICENSE("GPL");