Add mXT1386 compatible for "touchscreen@4c".

Signed-off-by: Jiada Wang <redacted>
---
 arch/arm/boot/dts/tegra20-acer-a500-picasso.dts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/tegra20-acer-a500-picasso.dts b/arch/arm/boot/dts/tegra20-acer-a500-picasso.dts
index 2d683c9a1a5d..7915b6e9190e 100644
--- a/arch/arm/boot/dts/tegra20-acer-a500-picasso.dts
+++ b/arch/arm/boot/dts/tegra20-acer-a500-picasso.dts

@@ -428,7 +428,7 @@
 		};
 
 		touchscreen@4c {
-			compatible = "atmel,maxtouch";
+			compatible = "atmel,mXT1386", "atmel,maxtouch";
 			reg = <0x4c>;
 
 			atmel,cfg_name = "maxtouch-acer-iconia-tab-a500.cfg";