MAINTAINERS: move myself to reviewers for avb/ab

As Mattijs Korpershoek is in fact doing overall
maintenance of AVB/AB code, move myself to reviewers.

CC: Mattijs Korpershoek <mkorpershoek@baylibre.com>
Signed-off-by: Igor Opaniuk <igor.opaniuk@gmail.com>
Reviewed-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
Link: https://lore.kernel.org/r/20250109112854.825204-1-igor.opaniuk@gmail.com
Signed-off-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
diff --git a/MAINTAINERS b/MAINTAINERS
index 5a575f4..e45b5a5 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -66,8 +66,8 @@
 F:	test/lib/alist.c
 
 ANDROID AB
-M:	Igor Opaniuk <igor.opaniuk@gmail.com>
 M:	Mattijs Korpershoek <mkorpershoek@baylibre.com>
+R:	Igor Opaniuk <igor.opaniuk@gmail.com>
 R:	Sam Protsenko <semen.protsenko@linaro.org>
 S:	Maintained
 T:	git https://source.denx.de/u-boot/custodians/u-boot-dfu.git
@@ -77,8 +77,8 @@
 F:	test/py/tests/test_android/test_ab.py
 
 ANDROID AVB
-M:	Igor Opaniuk <igor.opaniuk@gmail.com>
 M:	Mattijs Korpershoek <mkorpershoek@baylibre.com>
+R:	Igor Opaniuk <igor.opaniuk@gmail.com>
 S:	Maintained
 T:	git https://source.denx.de/u-boot/custodians/u-boot-dfu.git
 F:	cmd/avb.c