ARM: dtsi: enable ahci sata on imx6q platforms

Only imx6q has the ahci sata controller, enable
it on imx6q platforms.

Signed-off-by: Richard Zhu <r65037@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
diff --git a/arch/arm/boot/dts/imx6q-sabresd.dts b/arch/arm/boot/dts/imx6q-sabresd.dts
index 5e62c24..9cbdfe7 100644
--- a/arch/arm/boot/dts/imx6q-sabresd.dts
+++ b/arch/arm/boot/dts/imx6q-sabresd.dts
@@ -19,3 +19,7 @@
 	model = "Freescale i.MX6 Quad SABRE Smart Device Board";
 	compatible = "fsl,imx6q-sabresd", "fsl,imx6q";
 };
+
+&sata {
+	status = "okay";
+};