board: armltd: Make myself maintainer for total compute

The previous maintainer is no longer involved in total compute.

Signed-off-by: Ben Horgan <ben.horgan@arm.com>
Reviewed-by: Peter Robinson <pbrobinson@gmail.com>
Reviewed-by: Leo Yan <leo.yan@arm.com>
diff --git a/board/armltd/total_compute/MAINTAINERS b/board/armltd/total_compute/MAINTAINERS
index 3dc1cd1..92486f4 100644
--- a/board/armltd/total_compute/MAINTAINERS
+++ b/board/armltd/total_compute/MAINTAINERS
@@ -1,5 +1,5 @@
 TOTAL_COMPUTE BOARD
-M:	Usama Arif <usama.arif@arm.com>
+M:	Ben Horgan <ben.horgan@arm.com>
 S:	Maintained
 F:	board/armltd/total_compute/
 F:	include/configs/total_compute.h