board/imgtec/boston: Add new defconfigs to the MAINTAINERS list

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/board/imgtec/boston/MAINTAINERS b/board/imgtec/boston/MAINTAINERS
index 81f067d..07f6156 100644
--- a/board/imgtec/boston/MAINTAINERS
+++ b/board/imgtec/boston/MAINTAINERS
@@ -5,5 +5,9 @@
 F:	include/configs/boston.h
 F:	configs/boston32r2_defconfig
 F:	configs/boston32r2el_defconfig
+F:	configs/boston32r6_defconfig
+F:	configs/boston32r6el_defconfig
 F:	configs/boston64r2_defconfig
 F:	configs/boston64r2el_defconfig
+F:	configs/boston64r6_defconfig
+F:	configs/boston64r6el_defconfig