board/freescale: Remove P1020MBG board support

Remove NXP powerpc P1020MBG board support as it is no
longer maintained.

Signed-off-by: Priyanka Jain <priyanka.jain@nxp.com>
diff --git a/board/freescale/p1_p2_rdb_pc/Kconfig b/board/freescale/p1_p2_rdb_pc/Kconfig
index 39982b4..0f4f14d 100644
--- a/board/freescale/p1_p2_rdb_pc/Kconfig
+++ b/board/freescale/p1_p2_rdb_pc/Kconfig
@@ -1,5 +1,4 @@
-if TARGET_P1020MBG		|| \
-	TARGET_P1020RDB_PC	|| \
+if	TARGET_P1020RDB_PC	|| \
 	TARGET_P1020RDB_PD	|| \
 	TARGET_P1021RDB		|| \
 	TARGET_P1024RDB		|| \