ARM: dts: imx53: correct clock-names of SATA node

Per the binding doc imx-sata.txt, the first entry of clock-names should
be "sata" than anything else.  Correct it for imx53 SATA node.

It works for now only because SATA driver gets clock by index so far.
Signed-off-by: Shawn Guo <shawn.guo@freescale.com>

arch/arm/boot/dts/imx53.dtsi

@@ -108,7 +108,7 @@ sata: sata@10000000 {
 			clocks = <&clks IMX5_CLK_SATA_GATE>,
 				 <&clks IMX5_CLK_SATA_REF>,
 				 <&clks IMX5_CLK_AHB>;
-			clock-names = "sata_gate", "sata_ref", "ahb";
+			clock-names = "sata", "sata_ref", "ahb";
 			status = "disabled";
 		};