MAINTAINERS: fastboot: add Mattijs

Fastboot has been marked as orphaned since 2021.
Since I'm interested in maintaining this, assign myself.

Signed-off-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
Acked-by: Marek Vasut <marex@denx.de>
Acked-by: Lukasz Majewski <lukma@denx.de>
diff --git a/MAINTAINERS b/MAINTAINERS
index 4c7bbbf..9691c62 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1057,7 +1057,8 @@
 F:	test/py/tests/test_event_dump.py
 
 FASTBOOT
-S:	Orphaned
+M:	Mattijs Korpershoek <mkorpershoek@baylibre.com>
+S:	Maintained
 F:	cmd/fastboot.c
 F:	doc/android/fastboot*.rst
 F:	include/fastboot.h