MAINTAINERS: Add entry for Amlogic NAND controller driver

Add entry for Amlogic NAND controller driver and its bindings[0].

[0] https://lore.kernel.org/lkml/1547566684-57472-1-git-send-email-jianxin.pan@amlogic.com/Signed-off-by: Liang Yang <liang.yang@amlogic.com>
Signed-off-by: Jianxin Pan <jianxin.pan@amlogic.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>

MAINTAINERS

@@ -9849,6 +9849,13 @@ F:	drivers/media/platform/meson/ao-cec.c
 F:	Documentation/devicetree/bindings/media/meson-ao-cec.txt
 T:	git git://linuxtv.org/media_tree.git
 
+MESON NAND CONTROLLER DRIVER FOR AMLOGIC SOCS
+M:	Liang Yang <liang.yang@amlogic.com>
+L:	linux-mtd@lists.infradead.org
+S:	Maintained
+F:	drivers/mtd/nand/raw/meson_*
+F:	Documentation/devicetree/bindings/mtd/amlogic,meson-nand.txt
+
 MICROBLAZE ARCHITECTURE
 M:	Michal Simek <monstr@monstr.eu>
 W:	http://www.monstr.eu/fdt/