ARM: dts: r8a7790: Rename the serial port clock to fck

The clock is really the device functional clock, not the interface
clock. Rename it.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

arch/arm/boot/dts/r8a7790.dtsi

@@ -590,7 +590,7 @@ scifa0: serial@e6c40000 {
 		reg = <0 0xe6c40000 0 64>;
 		interrupts = <GIC_SPI 144 IRQ_TYPE_LEVEL_HIGH>;
 		clocks = <&mstp2_clks R8A7790_CLK_SCIFA0>;
-		clock-names = "sci_ick";
+		clock-names = "fck";
 		dmas = <&dmac0 0x21>, <&dmac0 0x22>;
 		dma-names = "tx", "rx";
 		power-domains = <&cpg_clocks>;
@@ -603,7 +603,7 @@ scifa1: serial@e6c50000 {
 		reg = <0 0xe6c50000 0 64>;
 		interrupts = <GIC_SPI 145 IRQ_TYPE_LEVEL_HIGH>;
 		clocks = <&mstp2_clks R8A7790_CLK_SCIFA1>;
-		clock-names = "sci_ick";
+		clock-names = "fck";
 		dmas = <&dmac0 0x25>, <&dmac0 0x26>;
 		dma-names = "tx", "rx";
 		power-domains = <&cpg_clocks>;
@@ -616,7 +616,7 @@ scifa2: serial@e6c60000 {
 		reg = <0 0xe6c60000 0 64>;
 		interrupts = <GIC_SPI 151 IRQ_TYPE_LEVEL_HIGH>;
 		clocks = <&mstp2_clks R8A7790_CLK_SCIFA2>;
-		clock-names = "sci_ick";
+		clock-names = "fck";
 		dmas = <&dmac0 0x27>, <&dmac0 0x28>;
 		dma-names = "tx", "rx";
 		power-domains = <&cpg_clocks>;
@@ -629,7 +629,7 @@ scifb0: serial@e6c20000 {
 		reg = <0 0xe6c20000 0 64>;
 		interrupts = <GIC_SPI 148 IRQ_TYPE_LEVEL_HIGH>;
 		clocks = <&mstp2_clks R8A7790_CLK_SCIFB0>;
-		clock-names = "sci_ick";
+		clock-names = "fck";
 		dmas = <&dmac0 0x3d>, <&dmac0 0x3e>;
 		dma-names = "tx", "rx";
 		power-domains = <&cpg_clocks>;
@@ -642,7 +642,7 @@ scifb1: serial@e6c30000 {
 		reg = <0 0xe6c30000 0 64>;
 		interrupts = <GIC_SPI 149 IRQ_TYPE_LEVEL_HIGH>;
 		clocks = <&mstp2_clks R8A7790_CLK_SCIFB1>;
-		clock-names = "sci_ick";
+		clock-names = "fck";
 		dmas = <&dmac0 0x19>, <&dmac0 0x1a>;
 		dma-names = "tx", "rx";
 		power-domains = <&cpg_clocks>;
@@ -655,7 +655,7 @@ scifb2: serial@e6ce0000 {
 		reg = <0 0xe6ce0000 0 64>;
 		interrupts = <GIC_SPI 150 IRQ_TYPE_LEVEL_HIGH>;
 		clocks = <&mstp2_clks R8A7790_CLK_SCIFB2>;
-		clock-names = "sci_ick";
+		clock-names = "fck";
 		dmas = <&dmac0 0x1d>, <&dmac0 0x1e>;
 		dma-names = "tx", "rx";
 		power-domains = <&cpg_clocks>;
@@ -668,7 +668,7 @@ scif0: serial@e6e60000 {
 		reg = <0 0xe6e60000 0 64>;
 		interrupts = <GIC_SPI 152 IRQ_TYPE_LEVEL_HIGH>;
 		clocks = <&mstp7_clks R8A7790_CLK_SCIF0>;
-		clock-names = "sci_ick";
+		clock-names = "fck";
 		dmas = <&dmac0 0x29>, <&dmac0 0x2a>;
 		dma-names = "tx", "rx";
 		power-domains = <&cpg_clocks>;
@@ -681,7 +681,7 @@ scif1: serial@e6e68000 {
 		reg = <0 0xe6e68000 0 64>;
 		interrupts = <GIC_SPI 153 IRQ_TYPE_LEVEL_HIGH>;
 		clocks = <&mstp7_clks R8A7790_CLK_SCIF1>;
-		clock-names = "sci_ick";
+		clock-names = "fck";
 		dmas = <&dmac0 0x2d>, <&dmac0 0x2e>;
 		dma-names = "tx", "rx";
 		power-domains = <&cpg_clocks>;
@@ -694,7 +694,7 @@ hscif0: serial@e62c0000 {
 		reg = <0 0xe62c0000 0 96>;
 		interrupts = <GIC_SPI 154 IRQ_TYPE_LEVEL_HIGH>;
 		clocks = <&mstp7_clks R8A7790_CLK_HSCIF0>;
-		clock-names = "sci_ick";
+		clock-names = "fck";
 		dmas = <&dmac0 0x39>, <&dmac0 0x3a>;
 		dma-names = "tx", "rx";
 		power-domains = <&cpg_clocks>;
@@ -707,7 +707,7 @@ hscif1: serial@e62c8000 {
 		reg = <0 0xe62c8000 0 96>;
 		interrupts = <GIC_SPI 155 IRQ_TYPE_LEVEL_HIGH>;
 		clocks = <&mstp7_clks R8A7790_CLK_HSCIF1>;
-		clock-names = "sci_ick";
+		clock-names = "fck";
 		dmas = <&dmac0 0x4d>, <&dmac0 0x4e>;
 		dma-names = "tx", "rx";
 		power-domains = <&cpg_clocks>;