ARM: Dove: convert usb host controller to DT

With DT support for orion-ehci also convert Dove to it and
remove the legacy calls and clock aliases.

This patch is based on "ARM: Dove: split legacy and DT setup"
applied to mvebu/boards recently.

Signed-off-by: Sebastian Hesselbarth <[e-mail]>
Signed-off-by: Jason Cooper <[e-mail]>

arch/arm/boot/dts/dove.dtsi

···
 			status = "disabled";
 		};
 
+		ehci0: usb-host@50000 {
+			compatible = "marvell,orion-ehci";
+			reg = <0x50000 0x1000>;
+			interrupts = <24>;
+			clocks = <&gate_clk 0>;
+			status = "okay";
+		};
+
+		ehci1: usb-host@51000 {
+			compatible = "marvell,orion-ehci";
+			reg = <0x51000 0x1000>;
+			interrupts = <25>;
+			clocks = <&gate_clk 1>;
+			status = "okay";
+		};
+
 		sdio0: sdio@92000 {
 			compatible = "marvell,dove-sdhci";
 			reg = <0x92000 0x100>;

arch/arm/mach-dove/board-dt.c

···
 	clkspec.np = np;
 	clkspec.args_count = 1;
 
-	clkspec.args[0] = CLOCK_GATING_BIT_USB0;
-	orion_clkdev_add(NULL, "orion-ehci.0",
-			 of_clk_get_from_provider(&clkspec));
-
-	clkspec.args[0] = CLOCK_GATING_BIT_USB1;
-	orion_clkdev_add(NULL, "orion-ehci.1",
-			 of_clk_get_from_provider(&clkspec));
-
 	clkspec.args[0] = CLOCK_GATING_BIT_GBE;
 	orion_clkdev_add(NULL, "mv643xx_eth_port.0",
 			 of_clk_get_from_provider(&clkspec));
···
 
 	/* Internal devices not ported to DT yet */
 	dove_ge00_init(&dove_dt_ge00_data);
-	dove_ehci0_init();
-	dove_ehci1_init();
 	dove_pcie_init(1, 1);
 
 	of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);