corstone1000: update maintainers

Update MAINTAINERS of corstone1000 board.

Signed-off-by: Xueliang Zhong <xueliang.zhong@arm.com>
Signed-off-by: Abdellatif El Khlifi <abdellatif.elkhlifi@arm.com>
diff --git a/board/armltd/corstone1000/MAINTAINERS b/board/armltd/corstone1000/MAINTAINERS
index 8c90568..1cc9aaa 100644
--- a/board/armltd/corstone1000/MAINTAINERS
+++ b/board/armltd/corstone1000/MAINTAINERS
@@ -1,6 +1,6 @@
 CORSTONE1000 BOARD
-M:	Rui Miguel Silva <rui.silva@linaro.org>
-M:	Vishnu Banavath <vishnu.banavath@arm.com>
+M:	Abdellatif El Khlifi <abdellatif.elkhlifi@arm.com>
+M:	Xueliang Zhong <xueliang.zhong@arm.com>
 S:	Maintained
 F:	board/armltd/corstone1000/
 F:	include/configs/corstone1000.h