MAINTAINERS: Add entry for Netronix embedded controller

Let's make sure I'll notice when there are patches for the NTXEC
drivers.

Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

MAINTAINERS

@@ -12385,6 +12385,15 @@ F:	include/net/netrom.h
 F:	include/uapi/linux/netrom.h
 F:	net/netrom/
 
+NETRONIX EMBEDDED CONTROLLER
+M:	Jonathan Neuschäfer <j.neuschaefer@gmx.net>
+S:	Maintained
+F:	Documentation/devicetree/bindings/mfd/netronix,ntxec.yaml
+F:	drivers/mfd/ntxec.c
+F:	drivers/pwm/pwm-ntxec.c
+F:	drivers/rtc/rtc-ntxec.c
+F:	include/linux/mfd/ntxec.h
+
 NETRONOME ETHERNET DRIVERS
 M:	Simon Horman <simon.horman@netronome.com>
 R:	Jakub Kicinski <kuba@kernel.org>