arm: mvebu: fix length of SATA registers area in .dtsi

The length of the registers area for the Marvell 370/XP SATA
controller was incorrect in the .dtsi: 0x2400 while it should have
been 0x5000. Until now, this problem wasn't noticed because there was
a large static mapping for all I/Os set up by ->map_io(). But since
we're going to get rid of this static mapping, we need to ensure that
the register areas are properly sized.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>

arch/arm/boot/dts/armada-370-xp.dtsi

@@ -80,7 +80,7 @@ timer@20300 {
 
 			sata@a0000 {
 				compatible = "marvell,orion-sata";
-				reg = <0xa0000 0x2400>;
+				reg = <0xa0000 0x5000>;
 				interrupts = <55>;
 				clocks = <&gateclk 15>, <&gateclk 30>;
 				clock-names = "0", "1";