MLK-25255-2: arm64: dts: imx8mp: add clock for rpmsg audio

Add necessary clock for rpmsg audio. These clocks are needed
by M4 image.

Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Reviewed-by: Peng Zhang <peng.zhang_8@nxp.com>
(cherry-picked from commit 399043954dca67fc6ec1c03f3db3de90867ef5af)

arch/arm64/boot/dts/freescale/imx8mp-evk-rpmsg.dts

@@ -67,6 +67,12 @@
 		fsl,audioindex = <0> ;
 		fsl,dma-buffer-size = <0x6000000>;
 		fsl,enable-lpa;
+		clocks = <&audio_blk_ctrl IMX8MP_CLK_AUDIO_BLK_CTRL_SAI3_IPG>,
+			 <&audio_blk_ctrl IMX8MP_CLK_AUDIO_BLK_CTRL_SAI3_MCLK1>,
+			 <&audio_blk_ctrl IMX8MP_CLK_AUDIO_BLK_CTRL_SDMA3_ROOT>,
+			 <&clk IMX8MP_AUDIO_PLL1_OUT>,
+			 <&clk IMX8MP_AUDIO_PLL2_OUT>;
+		clock-names = "bus", "mclk", "dma", "pll8k", "pll11k";
 		power-domains = <&audiomix_pd>;
 		status = "okay";
 	};