MAINTAINERS: Add CIX SoC maintainer entry

Using this entry as the maintainers information for CIX SoCs.

Reviewed-by: Krzysztof Kozlowski <[email protected]>
Acked-by: Fugang Duan <[email protected]>
Signed-off-by: Peter Chen <[email protected]>
Signed-off-by: Arnd Bergmann <[email protected]>

Author: Peter Chen

MAINTAINERS

@@ -2354,6 +2354,19 @@ F:	arch/arm/boot/compressed/misc-ep93xx.h
 F:	arch/arm/mach-ep93xx/
 F:	drivers/iio/adc/ep93xx_adc.c
 
+ARM/CIX SOC SUPPORT
+M:	Peter Chen <[email protected]>
+M:	Fugang Duan <[email protected]>
+R:	CIX Linux Kernel Upstream Group <[email protected]>
+L:	[email protected] (moderated for non-subscribers)
+S:	Maintained
+T:	git git://git.kernel.org/pub/scm/linux/kernel/git/peter.chen/cix.git
+F:	Documentation/devicetree/bindings/arm/cix.yaml
+F:	Documentation/devicetree/bindings/mailbox/cix,sky1-mbox.yaml
+F:	arch/arm64/boot/dts/cix/
+F:	drivers/mailbox/cix-mailbox.c
+K:	\bcix\b
+
 ARM/CLKDEV SUPPORT
 M:	Russell King <[email protected]>
 L:	[email protected] (moderated for non-subscribers)