ARM: dts: imx51-zii-rdu1: fix touchscreen pinctrl

The pinctrl settings were incorrect for the touchscreen interrupt line, causing
an interrupt storm. This change has been tested with both the atmel_mxt_ts and
RMI4 drivers on the RDU1 units.

The value 0x4 comes from the value of register IOMUXC_SW_PAD_CTL_PAD_CSI1_D8
from the old vendor kernel.

Signed-off-by: Nick Dyer <[email protected]>
Fixes: ceef039 ("ARM: dts: imx: add ZII RDU1 board")
Cc: <[email protected]> # 4.15+
Reviewed-by: Fabio Estevam <[email protected]>
Tested-by: Chris Healy <[email protected]>
Signed-off-by: Shawn Guo <[email protected]>

Author: ndyer

arch/arm/boot/dts/imx51-zii-rdu1.dts

@@ -770,7 +770,7 @@
 
 	pinctrl_ts: tsgrp {
 		fsl,pins = <
-			MX51_PAD_CSI1_D8__GPIO3_12		0x85
+			MX51_PAD_CSI1_D8__GPIO3_12		0x04
 			MX51_PAD_CSI1_D9__GPIO3_13		0x85
 		>;
 	};