MAINTAINERS: SPI: Add mailing list imx@lists.linux.dev for nxp spi drivers

Add mailing list imx@lists.linux.dev for nxp spi drivers(qspi, fspi and
dspi).

Signed-off-by: Frank Li <Frank.Li@nxp.com>
Reviewed-by: Stefan Wahren <wahrenst@gmx.net>
Link: https://patch.msgid.link/20240905155230.1901787-1-Frank.Li@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>

Author: nxpfrankli

MAINTAINERS

@@ -8861,6 +8861,7 @@ F:	drivers/dma/fsldma.*
 FREESCALE DSPI DRIVER
 M:	Vladimir Oltean <olteanv@gmail.com>
 L:	linux-spi@vger.kernel.org
+L:	imx@lists.linux.dev
 S:	Maintained
 F:	Documentation/devicetree/bindings/spi/fsl,dspi*.yaml
 F:	drivers/spi/spi-fsl-dspi.c
@@ -8989,6 +8990,7 @@ F:	include/linux/fsl/ptp_qoriq.h
 FREESCALE QUAD SPI DRIVER
 M:	Han Xu <han.xu@nxp.com>
 L:	linux-spi@vger.kernel.org
+L:	imx@lists.linux.dev
 S:	Maintained
 F:	Documentation/devicetree/bindings/spi/fsl,spi-fsl-qspi.yaml
 F:	drivers/spi/spi-fsl-qspi.c
@@ -16413,6 +16415,7 @@ M:	Han Xu <han.xu@nxp.com>
 M:	Haibo Chen <haibo.chen@nxp.com>
 R:	Yogesh Gaur <yogeshgaur.83@gmail.com>
 L:	linux-spi@vger.kernel.org
+L:	imx@lists.linux.dev
 S:	Maintained
 F:	Documentation/devicetree/bindings/spi/spi-nxp-fspi.yaml
 F:	drivers/spi/spi-nxp-fspi.c