MAINTAINERS: add maintainers for AMD family 17h and 19h reference boards

Change-Id: I90673a3244c5f2d5eda8e8805779fdad3a2b3226
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/48382
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Jason Glenesk <jason.glenesk@gmail.com>
Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>
diff --git a/MAINTAINERS b/MAINTAINERS
index 14444aa..49fbc38 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -137,6 +137,14 @@
 # Mainboards
 ################################################################################
 
+AMD family 17h and 19h reference boards
+M:	Marshall Dawson <marshalldawson3rd@gmail.com>
+M:	Felix Held <felix-coreboot@felixheld.de>
+M:	Jason Glenesk <jason.glenesk@gmail.com>
+S:	Maintained
+F:	src/mainboard/amd/majolica/
+F:	src/mainboard/amd/mandolin/
+
 APPLE MAINBOARDS
 M:	Evgeny Zinoviev <me@ch1p.io>
 S:	Maintained