LF-16159: arm64: dts: imx95-15x15-frdm: update mclk-fs

Update mclk-fs value to avoid below warning:
fsl-mqs mqs1: can't get proper divider

Signed-off-by: Lei Xu <lei.xu@nxp.com>
Reviewed-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Acked-by: Jason Liu <jason.hui.liu@nxp.com>

Author: nxp-xl

arch/arm64/boot/dts/freescale/imx95-15x15-frdm.dts

@@ -1129,7 +1129,7 @@
 			bitclock-master;
 			frame-master;
 			playback-only;
-			mclk-fs = <256>;
+			mclk-fs = <512>;
 
 			sai1_endpoint1: endpoint {
 				remote-endpoint = <&mqs1_endpoint>;