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/arch/arm/Kconfig b/arch/arm/Kconfig
index 57c48d5..c4371c7 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -442,6 +442,10 @@
 	select CPU_V7
 	select SUPPORT_SPL
 
+config ARCH_MX7
+	bool "Freescale MX7"
+	select CPU_V7
+
 config ARCH_MX6
 	bool "Freescale MX6"
 	select CPU_V7
@@ -665,6 +669,8 @@
 
 source "arch/arm/mach-kirkwood/Kconfig"
 
+source "arch/arm/cpu/armv7/mx7/Kconfig"
+
 source "arch/arm/cpu/armv7/mx6/Kconfig"
 
 source "arch/arm/cpu/armv7/mx5/Kconfig"