MAINTAINERS: Added myself as a reviewer for TCG Plugins

Signed-off-by: Mahmoud Mandour <ma.mandourr@gmail.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20210623125458.450462-6-ma.mandourr@gmail.com>
Message-Id: <20210709143005.1554-41-alex.bennee@linaro.org>

MAINTAINERS

@@ -3017,6 +3017,7 @@ F: include/tcg/
 TCG Plugins
 M: Alex Bennée <alex.bennee@linaro.org>
 R: Alexandre Iooss <erdnaxe@crans.org>
+R: Mahmoud Mandour <ma.mandourr@gmail.com>
 S: Maintained
 F: docs/devel/tcg-plugins.rst
 F: plugins/