MAINTAINERS: Use Lee Jones' kernel.org address for MFD submissions

Going forward, I'll be using my kernel.org for upstream work.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Lee Jones <lee@kernel.org>
Link: https://lore.kernel.org/r/20220714112533.539910-2-lee@kernel.org

Author: lag-linaro

MAINTAINERS

@@ -13556,7 +13556,7 @@ F:	Documentation/devicetree/bindings/media/i2c/aptina,mt9v111.yaml
 F:	drivers/media/i2c/mt9v111.c
 
 MULTIFUNCTION DEVICES (MFD)
-M:	Lee Jones <lee.jones@linaro.org>
+M:	Lee Jones <lee@kernel.org>
 S:	Supported
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd.git
 F:	Documentation/devicetree/bindings/mfd/