arm64: dts: imx93: correct mediamix power

"nic_media" clock should be enabled when power on/off mediamix, otherwise
power on/off will fail. Because "media_axi_root" clock is the parent of
"nic_media" clock, so replace "media_axi_clock" clock with "nic_media"
clock in mediamix node.

Link: https://github.com/nxp-imx/linux-imx/commit/ce18e6d0071ae9df5486af8613708ebe920484be
Fixes: f2d03ba9 ("arm64: dts: imx93: reorder device nodes")
Fixes: e85d3458 ("arm64: dts: imx93: add src node")
Reviewed-by: Jacky Bai <ping.bai@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Liu Ying <victor.liu@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm64/boot/dts/freescale/imx93.dtsi

@@ -417,7 +417,7 @@ mediamix: power-domain@44462400 {
 					compatible = "fsl,imx93-src-slice";
 					reg = <0x44462400 0x400>, <0x44465800 0x400>;
 					#power-domain-cells = <0>;
-					clocks = <&clk IMX93_CLK_MEDIA_AXI>,
+					clocks = <&clk IMX93_CLK_NIC_MEDIA_GATE>,
 						 <&clk IMX93_CLK_MEDIA_APB>;
 				};
 			};