MAINTAINERS: Add information for Toshiba Visconti ARM SoCs

Add information about Toshiba Visconti ARM SoCs to MAINTAINERS.
Signed-off-by: Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@toshiba.co.jp>
Reviewed-by: Punit Agrawal <punit1.agrawal@toshiba.co.jp>

MAINTAINERS

@@ -2651,6 +2651,17 @@ M:	Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
 M:	Dirk Opfer <dirk@opfer-online.de>
 S:	Maintained
 
+ARM/TOSHIBA VISCONTI ARCHITECTURE
+M:	Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@toshiba.co.jp>
+L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
+S:	Supported
+T:	git git://git.kernel.org/pub/scm/linux/kernel/git/iwamatsu/linux-visconti.git
+F:	Documentation/devicetree/bindings/arm/toshiba.yaml
+F:	Documentation/devicetree/bindings/pinctrl/toshiba,tmpv7700-pinctrl.yaml
+F:	arch/arm64/boot/dts/toshiba/
+F:	drivers/pinctrl/visconti/
+N:	visconti
+
 ARM/UNIPHIER ARCHITECTURE
 M:	Masahiro Yamada <yamada.masahiro@socionext.com>
 L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)