MAINTAINERS: Update Allwinner entry and add new maintainer

Add Chen-Yu Tsai as a co-maintainer to the ARM sunxi support.

While we are doing so, also update the entry for new SoCs.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
diff --git a/MAINTAINERS b/MAINTAINERS
index 5f46784..23b7224 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -894,11 +894,12 @@
 L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
 S:	Maintained
 
-ARM/Allwinner A1X SoC support
+ARM/Allwinner sunXi SoC support
 M:	Maxime Ripard <maxime.ripard@free-electrons.com>
+M:	Chen-Yu Tsai <wens@csie.org>
 L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
 S:	Maintained
-N:	sun[x4567]i
+N:	sun[x456789]i
 
 ARM/Allwinner SoC Clock Support
 M:	Emilio López <emilio@elopez.com.ar>