powerpc: fsl: Update maintainers

Update maintainers for B4860QDS, P1010RDB, P1_TWR, T104xRDB.

Signed-off-by: York Sun <york.sun@nxp.com>
diff --git a/board/freescale/b4860qds/MAINTAINERS b/board/freescale/b4860qds/MAINTAINERS
index 97304c5..34ac099 100644
--- a/board/freescale/b4860qds/MAINTAINERS
+++ b/board/freescale/b4860qds/MAINTAINERS
@@ -1,5 +1,5 @@
 B4860QDS BOARD
-#M:	-
+M:	Ashish Kumar <ashish.kumar@nxp.com>
 S:	Maintained
 F:	board/freescale/b4860qds/
 F:	include/configs/B4860QDS.h