imx: imx7d: Add SoC system support

Add imx7d basic SoC system support
Misc arch dependent functions for system bring up

Signed-off-by: Adrian Alonso <aalonso@freescale.com>
Signed-off-by: Peng Fan <Peng.Fan@freescale.com>
Signed-off-by: Ye.Li <B37916@freescale.com>
diff --git a/arch/arm/include/asm/arch-imx/cpu.h b/arch/arm/include/asm/arch-imx/cpu.h
index 416905a..7e681e9 100644
--- a/arch/arm/include/asm/arch-imx/cpu.h
+++ b/arch/arm/include/asm/arch-imx/cpu.h
@@ -21,9 +21,11 @@
 #define MXC_CPU_MX6D		0x67
 #define MXC_CPU_MX6DP		0x68
 #define MXC_CPU_MX6QP		0x69
+#define MXC_CPU_MX7D		0x72
 #define MXC_CPU_VF610		0xF6 /* dummy ID */
 
 #define MXC_SOC_MX6		0x60
+#define MXC_SOC_MX7		0x70
 
 #define CS0_128					0
 #define CS0_64M_CS1_64M				1