ARM: dts: r8a7793: add audio DMAC clocks to device tree

Instantiate Audio DMA clocks in the r8a7791 device tree.

Based on similar work for the r8a7791 by Kuninori Morimoto.

Cc: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

arch/arm/boot/dts/r8a7793.dtsi

@@ -924,10 +924,11 @@ mstp4_clks: mstp4_clks@e6150140 {
 		mstp5_clks: mstp5_clks@e6150144 {
 			compatible = "renesas,r8a7793-mstp-clocks", "renesas,cpg-mstp-clocks";
 			reg = <0 0xe6150144 0 4>, <0 0xe615003c 0 4>;
-			clocks = <&extal_clk>;
+			clocks = <&hp_clk>, <&hp_clk>, <&extal_clk>;
 			#clock-cells = <1>;
-			clock-indices = <R8A7793_CLK_THERMAL>;
-			clock-output-names = "thermal";
+			clock-indices = <R8A7793_CLK_AUDIO_DMAC0 R8A7793_CLK_AUDIO_DMAC1
+					 R8A7793_CLK_THERMAL>;
+			clock-output-names = "audmac0", "audmac1", "thermal";
 		};
 		mstp7_clks: mstp7_clks@e615014c {
 			compatible = "renesas,r8a7793-mstp-clocks",