MSCC: add board support for the Ocelots based evaluation boards

Adding the support for 2 boards sharing common code for Ocelot chip:
PCB120 and PCB123

Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
diff --git a/MAINTAINERS b/MAINTAINERS
index 9841d0d..d9de915 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -518,6 +518,11 @@
 M:	Horatiu Vultur <horatiu.vultur@microchip.com>
 S:	Maintained
 F:	arch/mips/mach-mscc/
+F:	arch/mips/dts/mscc*
+F:	arch/mips/dts/ocelot*
+F:	board/mscc/
+F:	configs/mscc*
+F:	include/configs/vcoreiii.h
 
 MMC
 M:	Jaehoon Chung <jh80.chung@samsung.com>