ARM: dts: imx6q-logicpd: Add a specific board compatible string

It is standard practice to have a specific board compatible string, so
pass "logicpd,imx6q-logicpd".

Signed-off-by: Fabio Estevam <[e-mail]>
Signed-off-by: Shawn Guo <[e-mail]>

arch/arm/boot/dts/imx6q-logicpd.dts

···
 
 / {
 	model = "Logic PD i.MX6QD SOM-M3";
-	compatible = "fsl,imx6q";
+	compatible = "logicpd,imx6q-logicpd", "fsl,imx6q";
 
 	backlight: backlight-lvds {
 		compatible = "pwm-backlight";