ARM: dts: r8a7740: 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/r8a7740.dtsi

@@ -214,7 +214,7 @@ scifa0: serial@e6c40000 {
 		reg = <0xe6c40000 0x100>;
 		interrupts = <GIC_SPI 100 IRQ_TYPE_LEVEL_HIGH>;
 		clocks = <&mstp2_clks R8A7740_CLK_SCIFA0>;
-		clock-names = "sci_ick";
+		clock-names = "fck";
 		power-domains = <&pd_a3sp>;
 		status = "disabled";
 	};
@@ -224,7 +224,7 @@ scifa1: serial@e6c50000 {
 		reg = <0xe6c50000 0x100>;
 		interrupts = <GIC_SPI 101 IRQ_TYPE_LEVEL_HIGH>;
 		clocks = <&mstp2_clks R8A7740_CLK_SCIFA1>;
-		clock-names = "sci_ick";
+		clock-names = "fck";
 		power-domains = <&pd_a3sp>;
 		status = "disabled";
 	};
@@ -234,7 +234,7 @@ scifa2: serial@e6c60000 {
 		reg = <0xe6c60000 0x100>;
 		interrupts = <GIC_SPI 102 IRQ_TYPE_LEVEL_HIGH>;
 		clocks = <&mstp2_clks R8A7740_CLK_SCIFA2>;
-		clock-names = "sci_ick";
+		clock-names = "fck";
 		power-domains = <&pd_a3sp>;
 		status = "disabled";
 	};
@@ -244,7 +244,7 @@ scifa3: serial@e6c70000 {
 		reg = <0xe6c70000 0x100>;
 		interrupts = <GIC_SPI 103 IRQ_TYPE_LEVEL_HIGH>;
 		clocks = <&mstp2_clks R8A7740_CLK_SCIFA3>;
-		clock-names = "sci_ick";
+		clock-names = "fck";
 		power-domains = <&pd_a3sp>;
 		status = "disabled";
 	};
@@ -254,7 +254,7 @@ scifa4: serial@e6c80000 {
 		reg = <0xe6c80000 0x100>;
 		interrupts = <GIC_SPI 104 IRQ_TYPE_LEVEL_HIGH>;
 		clocks = <&mstp2_clks R8A7740_CLK_SCIFA4>;
-		clock-names = "sci_ick";
+		clock-names = "fck";
 		power-domains = <&pd_a3sp>;
 		status = "disabled";
 	};
@@ -264,7 +264,7 @@ scifa5: serial@e6cb0000 {
 		reg = <0xe6cb0000 0x100>;
 		interrupts = <GIC_SPI 105 IRQ_TYPE_LEVEL_HIGH>;
 		clocks = <&mstp2_clks R8A7740_CLK_SCIFA5>;
-		clock-names = "sci_ick";
+		clock-names = "fck";
 		power-domains = <&pd_a3sp>;
 		status = "disabled";
 	};
@@ -274,7 +274,7 @@ scifa6: serial@e6cc0000 {
 		reg = <0xe6cc0000 0x100>;
 		interrupts = <GIC_SPI 106 IRQ_TYPE_LEVEL_HIGH>;
 		clocks = <&mstp2_clks R8A7740_CLK_SCIFA6>;
-		clock-names = "sci_ick";
+		clock-names = "fck";
 		power-domains = <&pd_a3sp>;
 		status = "disabled";
 	};
@@ -284,7 +284,7 @@ scifa7: serial@e6cd0000 {
 		reg = <0xe6cd0000 0x100>;
 		interrupts = <GIC_SPI 107 IRQ_TYPE_LEVEL_HIGH>;
 		clocks = <&mstp2_clks R8A7740_CLK_SCIFA7>;
-		clock-names = "sci_ick";
+		clock-names = "fck";
 		power-domains = <&pd_a3sp>;
 		status = "disabled";
 	};
@@ -294,7 +294,7 @@ scifb: serial@e6c30000 {
 		reg = <0xe6c30000 0x100>;
 		interrupts = <GIC_SPI 108 IRQ_TYPE_LEVEL_HIGH>;
 		clocks = <&mstp2_clks R8A7740_CLK_SCIFB>;
-		clock-names = "sci_ick";
+		clock-names = "fck";
 		power-domains = <&pd_a3sp>;
 		status = "disabled";
 	};