imx: mx7dsabresd: Add support for MX7D SABRESD board

* Add i.MX7D SABRESD target board support with enabled modules:
  UART, PMIC, USB/OTG, SD, eMMC, ENET, I2C, 74LV IOX.

  Build target: mx7dsabresd_config

Signed-off-by: Peng Fan <Peng.Fan@freescale.com>
Signed-off-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: Ye.Li <B37916@freescale.com>
Signed-off-by: Adrian Alonso <aalonso@freescale.com>
diff --git a/board/freescale/mx7dsabresd/MAINTAINERS b/board/freescale/mx7dsabresd/MAINTAINERS
new file mode 100644
index 0000000..3910ee4
--- /dev/null
+++ b/board/freescale/mx7dsabresd/MAINTAINERS
@@ -0,0 +1,6 @@
+MX7DSABRESD BOARD
+M:	Adrian Alonso <aalonso@freescale.com>
+S:	Maintained
+F:	board/freescale/mx7dsabresd
+F:	include/configs/mx7dsabresd.h
+F:	configs/mx7dsabresd_defconfig