dv: osd icon display colored dots at 720p [1/1]

PD#SWPL-14463

Problem:
OSD hold line changed from 4 to 8, dv vertical
potch should be adjusted accordingly.

Solution:
increase vpotch from 0x20 to 0x30.

Verify:
verify on sm1 720p.

Change-Id: I33779829cb80ce34c5596081a7591278e214d347
Signed-off-by: yao liu <yao.liu@amlogic.com>

drivers/amlogic/media/enhancement/amdolby_vision/amdolby_vision.c

@@ -2652,6 +2652,9 @@ static void adjust_vpotch(void)
 				(vinfo->height < 720) &&
 				(vinfo->field_height < 720))
 				g_vpotch = 0x60;
+			else if ((vinfo->width == 1280) &&
+				 (vinfo->height == 720))
+				g_vpotch = 0x30;
 			else
 				g_vpotch = 0x20;
 			if (vinfo->width > 1920)