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/Kconfig b/board/freescale/mx7dsabresd/Kconfig
new file mode 100644
index 0000000..d7c6ae4
--- /dev/null
+++ b/board/freescale/mx7dsabresd/Kconfig
@@ -0,0 +1,15 @@
+if TARGET_MX7DSABRESD
+
+config SYS_BOARD
+	default "mx7dsabresd"
+
+config SYS_VENDOR
+	default "freescale"
+
+config SYS_SOC
+	default "mx7"
+
+config SYS_CONFIG_NAME
+	default "mx7dsabresd"
+
+endif