Fix the following fallthrough warnings:

drivers/video/fbdev/omap/omapfb_main.c:1558:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough]
           case 0:
           ^
   drivers/video/fbdev/omap/omapfb_main.c:1558:2: note: insert 'break;' to avoid fall-through
           case 0:
           ^
           break;
   1 warning generated.

This helps with the ongoing efforts to globally enable
-Wimplicit-fallthrough for Clang.

Link: https://github.com/KSPP/linux/issues/115
Link: https://lore.kernel.org/lkml/202110141005.hUjaYMEi-lkp@intel.com/ (local)
Reported-by: kernel test robot <redacted>
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
---
 drivers/video/fbdev/omap/omapfb_main.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/video/fbdev/omap/omapfb_main.c b/drivers/video/fbdev/omap/omapfb_main.c
index 3d090d2d9ed9..b495c09e6102 100644
--- a/drivers/video/fbdev/omap/omapfb_main.c
+++ b/drivers/video/fbdev/omap/omapfb_main.c

@@ -1555,6 +1555,7 @@ static void omapfb_free_resources(struct omapfb_device *fbdev, int state)
 	case 1:
 		dev_set_drvdata(fbdev->dev, NULL);
 		kfree(fbdev);
+		break;
 	case 0:
 		/* nothing to free */
 		break;

-- 
2.27.0