video: riva: Remove incorrect checks

'xoffset' and 'yoffset' are unsigned and hence cannot be less than 0.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

drivers/video/riva/fbdev.c

@@ -1185,11 +1185,6 @@ static int rivafb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
 	if (rivafb_do_maximize(info, var, nom, den) < 0)
 		return -EINVAL;
 
-	if (var->xoffset < 0)
-		var->xoffset = 0;
-	if (var->yoffset < 0)
-		var->yoffset = 0;
-
 	/* truncate xoffset and yoffset to maximum if too high */
 	if (var->xoffset > var->xres_virtual - var->xres)
 		var->xoffset = var->xres_virtual - var->xres - 1;