clk: mvebu: armada-39x: add clk description for supported interfaces

Both SATA and second USB3.0 interface are supported in Armada-39x SoC
family. Add necessary clk description, so both xhci and sata drivers
can be correctly initialized.

The binding documentation has also been updated accordingly.

Signed-off-by: Grzegorz Jaszczyk <[e-mail]>
Acked-by: Rob Herring <[e-mail]>
Reviewed-by: Thomas Petazzoni <[e-mail]>
Signed-off-by: Stephen Boyd <[e-mail]>

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

···
 7	pex3		PCIe 3
 8	pex0		PCIe 0
 9	usb3h0		USB3 Host 0
+10	usb3h1		USB3 Host 1
+15	sata0		SATA 0
 17	sdio		SDIO
 22	xor0		XOR 0
 28	xor1		XOR 1

drivers/clk/mvebu/armada-39x.c

···
 	{ "pex3", NULL, 7 },
 	{ "pex0", NULL, 8 },
 	{ "usb3h0", NULL, 9 },
+	{ "usb3h1", NULL, 10 },
+	{ "sata0", NULL, 15 },
 	{ "sdio", NULL, 17 },
 	{ "xor0", NULL, 22 },
 	{ "xor1", NULL, 28 },