imx6: icorem6: Rename engicam icorem6 defconfig files

Rename defconfig files for better compatible with
respective board names and dts files.

Cc: Stefano Babic <sbabic@denx.de>
Cc: Matteo Lisi <matteo.lisi@engicam.com>
Cc: Michael Trimarchi <michael@amarulasolutions.com>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
diff --git a/board/engicam/icorem6/MAINTAINERS b/board/engicam/icorem6/MAINTAINERS
index a425afb..0ef3a2c 100644
--- a/board/engicam/icorem6/MAINTAINERS
+++ b/board/engicam/icorem6/MAINTAINERS
@@ -3,5 +3,7 @@
 S:	Maintained
 F:	board/engicam/icorem6
 F:	include/configs/imx6qdl_icore.h
-F:	configs/imx6qdl_icore_mmc_defconfig
-F:	configs/imx6qdl_icore_nand_defconfig
+F:	configs/imx6q_icore_mmc_defconfig
+F:	configs/imx6q_icore_nand_defconfig
+F:	configs/imx6dl_icore_mmc_defconfig
+F:	configs/imx6dl_icore_nand_defconfig