MAINTAINERS: Update my email address

I'm not at bootlin anymore, and my mail address doesn't work any longer.

Signed-off-by: Maxime Ripard <mripard@kernel.org>
diff --git a/board/sunxi/MAINTAINERS b/board/sunxi/MAINTAINERS
index c7e9d3e..88f1353 100644
--- a/board/sunxi/MAINTAINERS
+++ b/board/sunxi/MAINTAINERS
@@ -151,7 +151,7 @@
 F:	arch/arm/dts/sun8i-r40-bananapi-m2-ultra.dts
 
 BANANAPI M2 MAGIC BOARD
-M:	Maxime Ripard <maxime.ripard@bootlin.com>
+M:	Maxime Ripard <mripard@kernel.org>
 S:	Maintained
 F:	configs/Bananapi_m2m_defconfig
 F:	arch/arm/dts/sun8i-r16-bananapi-m2m.dts
@@ -179,7 +179,7 @@
 F:	arch/arm/dts/sun8i-h3-beelink-x2.dts
 
 COLOMBUS BOARD
-M:	Maxime Ripard <maxime.ripard@bootlin.com>
+M:	Maxime Ripard <mripard@kernel.org>
 S:	Maintained
 F:	configs/Colombus_defconfig
 
@@ -465,7 +465,7 @@
 W:	https://linux-sunxi.org/Sunchip_CX-A99
 
 TBS A711 BOARD
-M:	Maxime Ripard <maxime.ripard@bootlin.com>
+M:	Maxime Ripard <mripard@kernel.org>
 S:	Maintained
 F:	configs/tbs_a711_defconfig