fbdev: Modify vsync timing calculation in wm8505fb

This removes the '+1' in vsync timing calculation for wm8505fb to
directly use values provided from the board setup code.

Signed-off-by: Alexey Charkov <[e-mail]>
Signed-off-by: Paul Mundt <[e-mail]>

drivers/video/wm8505fb.c

···
 	int v_start = info->var.upper_margin;
 	int v_end = v_start + info->var.yres;
 	int v_all = v_end + info->var.lower_margin;
-	int v_sync = info->var.vsync_len + 1;
+	int v_sync = info->var.vsync_len;
 
 	writel(0, fbi->regbase + WMT_GOVR_TG);