drm/bochs: Remove unneeded semicolon

Fixes coccicheck warning:

drivers/gpu/drm/bochs/bochs_hw.c:258:2-3: Unneeded semicolon

Reported-by: Hulk Robot <[e-mail]>
Signed-off-by: zhengbin <[e-mail]>
Link: http://patchwork.freedesktop.org/patch/msgid/[e-mail]
Signed-off-by: Gerd Hoffmann <[e-mail]>

drivers/gpu/drm/bochs/bochs_hw.c

···
 		DRM_ERROR("%s: Huh? Got framebuffer format 0x%x",
 			  __func__, format->format);
 		break;
-	};
+	}
 }
 
 void bochs_hw_setbase(struct bochs_device *bochs,