arm64: dts: imx8qxp: mba8xx: Add analog audio output on MBa8Xx

Enable SAI1, add the codec to enable LINE_IN and LINE_OUT support on
MBa8Xx on connectors X9 & X10.

Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>