drm/bochs: Remove unneeded semicolon

Fixes coccicheck warning:

drivers/gpu/drm/bochs/bochs_hw.c:258:2-3: Unneeded semicolon
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: zhengbin <zhengbin13@huawei.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1576468459-67216-1-git-send-email-zhengbin13@huawei.comSigned-off-by: Gerd Hoffmann <kraxel@redhat.com>

drivers/gpu/drm/bochs/bochs_hw.c

@@ -255,7 +255,7 @@ void bochs_hw_setformat(struct bochs_device *bochs,
 		DRM_ERROR("%s: Huh? Got framebuffer format 0x%x",
 			  __func__, format->format);
 		break;
-	};
+	}
 }
 
 void bochs_hw_setbase(struct bochs_device *bochs,