ARM: tegra: Use Hannstar HSD101PWW2 on Pegatron Chagall

The LVDS bindings require a specific compatible string in addition to
the generic "panel-lvds". Add the HannStar HSD101PWW2 which is used on
a similar device (ASUS TF201) and seems to work fine with slightly
modified timings in DT.
Suggested-by: Svyatoslav Ryhel <clamor95@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

arch/arm/boot/dts/nvidia/tegra30-pegatron-chagall.dts

@@ -2628,7 +2628,7 @@ cpu3: cpu@3 {
 	};
 
 	display-panel {
-		compatible = "panel-lvds";
+		compatible = "hannstar,hsd101pww2", "panel-lvds";
 
 		width-mm = <217>;
 		height-mm = <136>;