board: freescale: p1_p2_rdb_pc: Add MAINTAINER

Add "Priyanka Jain <priyanka.jain@nxp.com>" as
MAINTAINER for p1_p2_rdb_pc board.

Signed-off-by: Priyanka Jain <priyanka.jain@nxp.com>

board/freescale/p1_p2_rdb_pc/MAINTAINERS

 P1_P2_RDB_PC BOARD
-#M:	-
+M:	Priyanka Jain <priyanka.jain@nxp.com>
 S:	Maintained
 F:	board/freescale/p1_p2_rdb_pc/
 F:	include/configs/p1_p2_rdb_pc.h