lcd: t6d fix tcon internal clk sample issue [1/2]

PD#SWPL-197618

Problem:
clk phase use 0x990 will cause blur screen

Solution:
disable phy clk inv

Verify:
t6d

Change-Id: I6c0a0e85de7ca4056dc69de4ecdd658a569bb947
Signed-off-by: huijie.huang <huijie.huang@amlogic.com>
diff --git a/drivers/amlogic/media/vout/lcd/lcd_phy/lcd_phy_t6d.c b/drivers/amlogic/media/vout/lcd/lcd_phy/lcd_phy_t6d.c
index 2627b12..01fe7a9 100644
--- a/drivers/amlogic/media/vout/lcd/lcd_phy/lcd_phy_t6d.c
+++ b/drivers/amlogic/media/vout/lcd/lcd_phy/lcd_phy_t6d.c
@@ -227,8 +227,10 @@
 		if (phy_cfg->lane_valid & (1 << i)) {
 			bit = i & 0x1 ? 16 : 0;
 			chreg = reg_data;
-			chdig = 1 << 10 |
-				(is_mlvds ? 0xf : 0) << 2; //pn swap;
+			if (is_mlvds)
+				chdig = 0xf << 2;  //pn swap
+			else
+				chdig = 1 << 10;   //clk inv
 			if (status) {
 				chdig |= 1 << 15;
 				chreg |= (phy->lane[i].preem & 0xf) << 12;