MAINTAINERS: add maintainers for all PC Engines mainboards

Change-Id: Ic5855257900fe6e1e8dd3551f1427a4fe51924b1
Signed-off-by: Piotr Król <piotr.krol@3mdeb.com>
Reviewed-on: https://review.coreboot.org/21732
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Kamil Wcisło <kamil.wcislo@3mdeb.com>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>
Reviewed-by: Martin Roth <martinroth@google.com>
diff --git a/MAINTAINERS b/MAINTAINERS
index 127dd49..e014c39 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -276,6 +276,12 @@
 S:	Supported
 F:	src/mainboard/asus/kgpe-d16/
 
+PC ENGINES ALL MAINBOARDS
+M:	Piotr Król <piotr.krol@3mdeb.com>
+M:	Kamil Wcisło <kamil.wcislo@3mdeb.com>
+S:	Supported
+F:	src/mainboard/pcengines/
+
 AMD FAMILY10H & FAMILY15H (NON-AGESA) CPUS & NORTHBRIDGE
 M:	Timothy Pearson <tpearson@raptorengineeringinc.com>
 S:	Supported