ARM: shmobile: r8a7791: Add PCIEC clock device tree node

This patch adds the device tree clock node for the PCIe Controller
Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

arch/arm/boot/dts/r8a7791.dtsi

@@ -795,15 +795,16 @@ mstp3_clks: mstp3_clks@e615013c {
 			compatible = "renesas,r8a7791-mstp-clocks", "renesas,cpg-mstp-clocks";
 			reg = <0 0xe615013c 0 4>, <0 0xe6150048 0 4>;
 			clocks = <&cp_clk>, <&sd2_clk>, <&sd1_clk>, <&cpg_clocks R8A7791_CLK_SD0>,
-				 <&mmc0_clk>, <&hp_clk>, <&hp_clk>, <&mp_clk>, <&rclk_clk>;
+				 <&mmc0_clk>, <&hp_clk>, <&mp_clk>, <&hp_clk>, <&mp_clk>, <&rclk_clk>;
 			#clock-cells = <1>;
 			renesas,clock-indices = <
 				R8A7791_CLK_TPU0 R8A7791_CLK_SDHI2 R8A7791_CLK_SDHI1 R8A7791_CLK_SDHI0
-				R8A7791_CLK_MMCIF0 R8A7791_CLK_IIC0 R8A7791_CLK_IIC1 R8A7791_CLK_SSUSB R8A7791_CLK_CMT1
+				R8A7791_CLK_MMCIF0 R8A7791_CLK_IIC0 R8A7791_CLK_PCIEC R8A7791_CLK_IIC1
+				R8A7791_CLK_SSUSB R8A7791_CLK_CMT1
 			>;
 			clock-output-names =
 				"tpu0", "sdhi2", "sdhi1", "sdhi0",
-				"mmcif0", "i2c7", "i2c8", "ssusb", "cmt1";
+				"mmcif0", "i2c7", "pciec", "i2c8", "ssusb", "cmt1";
 		};
 		mstp5_clks: mstp5_clks@e6150144 {
 			compatible = "renesas,r8a7791-mstp-clocks", "renesas,cpg-mstp-clocks";

include/dt-bindings/clock/r8a7791-clock.h

@@ -53,6 +53,7 @@
 #define R8A7791_CLK_SDHI0		14
 #define R8A7791_CLK_MMCIF0		15
 #define R8A7791_CLK_IIC0		18
+#define R8A7791_CLK_PCIEC		19
 #define R8A7791_CLK_IIC1		23
 #define R8A7791_CLK_SSUSB		28
 #define R8A7791_CLK_CMT1		29