MAINTAINERS: Add entry for TQ-Systems device trees and drivers

This includes the arm & arm64 module + board DT files as well as x86
platform GPIO drivers.
Signed-off-by: Matthias Schiffer <matthias.schiffer@ew.tq-group.com>
Signed-off-by: Markus Niebel <Markus.Niebel@ew.tq-group.com>
Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Link: https://lore.kernel.org/r/20230801085158.87735-1-alexander.stein@ew.tq-group.comSigned-off-by: Lee Jones <lee@kernel.org>

MAINTAINERS

@@ -21576,6 +21576,20 @@ S:	Maintained
 F:	Documentation/hwmon/tps546d24.rst
 F:	drivers/hwmon/pmbus/tps546d24.c
 
+TQ SYSTEMS BOARD & DRIVER SUPPORT
+L:	linux@ew.tq-group.com
+S:	Supported
+W:	https://www.tq-group.com/en/products/tq-embedded/
+F:	arch/arm/boot/dts/imx*mba*.dts*
+F:	arch/arm/boot/dts/imx*tqma*.dts*
+F:	arch/arm/boot/dts/mba*.dtsi
+F:	arch/arm64/boot/dts/freescale/imx*mba*.dts*
+F:	arch/arm64/boot/dts/freescale/imx*tqma*.dts*
+F:	arch/arm64/boot/dts/freescale/mba*.dtsi
+F:	drivers/gpio/gpio-tqmx86.c
+F:	drivers/mfd/tqmx86.c
+F:	drivers/watchdog/tqmx86_wdt.c
+
 TRACING
 M:	Steven Rostedt <rostedt@goodmis.org>
 M:	Masami Hiramatsu <mhiramat@kernel.org>