MAINTAINERS: Add HPE GXP I2C Support

Add the I2C controller source and bindings.

Signed-off-by: Nick Hawkins <nick.hawkins@hpe.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>

Author: nhawkins48

MAINTAINERS

@@ -2281,12 +2281,14 @@ M:	Jean-Marie Verdun <verdun@hpe.com>
 M:	Nick Hawkins <nick.hawkins@hpe.com>
 S:	Maintained
 F:	Documentation/devicetree/bindings/arm/hpe,gxp.yaml
+F:	Documentation/devicetree/bindings/i2c/hpe,gxp-i2c.yaml
 F:	Documentation/devicetree/bindings/spi/hpe,gxp-spifi.yaml
 F:	Documentation/devicetree/bindings/timer/hpe,gxp-timer.yaml
 F:	arch/arm/boot/dts/hpe-bmc*
 F:	arch/arm/boot/dts/hpe-gxp*
 F:	arch/arm/mach-hpe/
 F:	drivers/clocksource/timer-gxp.c
+F:	drivers/i2c/busses/i2c-gxp.c
 F:	drivers/spi/spi-gxp.c
 F:	drivers/watchdog/gxp-wdt.c