arm64: dts: imx93-11x11-frdm: Add MQS audio support

arm64: dts: imx93-11x11-frdm: Add MQS audio support

Enable Medium Quality Sound (MQS) output on the i.MX93 FRDM 11x11 board
by adding sound card description and enabling sai1 and mqs1 dts nodes,
together with necessary clocks and pinmux.

This supports audio playback via SAI1 DAI which is connected to the MQS1
block.

Co-developed-by: Tom Zheng <haidong.zheng@nxp.com>
Signed-off-by: Tom Zheng <haidong.zheng@nxp.com>
Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com>
Tested-by: Francesco Valla <francesco@valla.it>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>