drm/gud: Remove unneeded semicolon

drivers/gpu/drm/gud/gud_connector.c:658:2-3: Unneeded semicolon
drivers/gpu/drm/gud/gud_connector.c:186:2-3: Unneeded semicolon
drivers/gpu/drm/gud/gud_drv.c:511:3-4: Unneeded semicolon
drivers/gpu/drm/gud/gud_pipe.c:127:4-5: Unneeded semicolon

 Remove unneeded semicolon.

Generated by: scripts/coccinelle/misc/semicolon.cocci

Fixes: 40e1a70b

 ("drm: Add GUD USB Display driver")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: kernel test robot <lkp@intel.com>
[fix subject and squash 3 per file patches]
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210322174434.58849-2-noralf@tronnes.org