MAINTAINERS: update Andrey Konovalov's email address

Use my personal email address.

Link: https://lkml.kernel.org/r/b0ec98dabbc12336c162788f5ccde97045a0d65e.1613150186.git.andreyknvl@google.com
Signed-off-by: Andrey Konovalov <[email protected]>
Cc: Alexander Potapenko <[email protected]>
Cc: Dmitry Vyukov <[email protected]>
Cc: Marco Elver <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

Author: xairy

MAINTAINERS

@@ -9584,7 +9584,7 @@ F:	scripts/kconfig/
 
 KCOV
 R:	Dmitry Vyukov <[email protected]>
-R:	Andrey Konovalov <andreyknvl@google.com>
+R:	Andrey Konovalov <andreyknvl@gmail.com>
 L:	[email protected]
 S:	Maintained
 F:	Documentation/dev-tools/kcov.rst