contrib/plugins: add execlog to log instruction execution and memory access

Log instruction execution and memory access to a file.
This plugin can be used for reverse engineering or for side-channel analysis
using QEMU.

Signed-off-by: Alexandre Iooss <erdnaxe@crans.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20210702081307.1653644-2-erdnaxe@crans.org>
Message-Id: <20210709143005.1554-35-alex.bennee@linaro.org>
diff --git a/MAINTAINERS b/MAINTAINERS
index c340bb0..83b5503 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -3017,6 +3017,7 @@
 
 TCG Plugins
 M: Alex Bennée <alex.bennee@linaro.org>
+R: Alexandre Iooss <erdnaxe@crans.org>
 S: Maintained
 F: docs/devel/tcg-plugins.rst
 F: plugins/