devicetree: bindings: clk: mvebu: fix description for sata1 on Armada XP

SATA Host 0 clock is (as correctly documented) id 15/sata0.
Signed-off-by: NUwe Kleine-König <uwe@kleine-koenig.org>
Signed-off-by: NRob Herring <robh@kernel.org>

Documentation/devicetree/bindings/clock/mvebu-gated-clock.txt

@@ -117,7 +117,7 @@ ID	Clock	Peripheral
 25	tdm	Time Division Mplx
 28	xor1	XOR DMA 1
 29	sata1lnk
-30	sata1	SATA Host 0
+30	sata1	SATA Host 1
 
 The following is a list of provided IDs for Dove:
 ID	Clock	Peripheral