imx8: add arch_cpu_init arch_cpu_init_dm

Add arch_cpu_init(_dm) mainly to open the channel between ACore and SCU.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Anatolij Gustschin <agust@denx.de>
Cc: Stefano Babic <sbabic@denx.de>
diff --git a/arch/arm/include/asm/arch-imx8/sys_proto.h b/arch/arm/include/asm/arch-imx8/sys_proto.h
index f9a3016..73ffaba 100644
--- a/arch/arm/include/asm/arch-imx8/sys_proto.h
+++ b/arch/arm/include/asm/arch-imx8/sys_proto.h
@@ -6,5 +6,14 @@
 #include <asm/mach-imx/sys_proto.h>
 #include <linux/types.h>
 
+struct pass_over_info_t {
+	u16 barker;
+	u16 len;
+	u32 g_bt_cfg_shadow;
+	u32 card_address_mode;
+	u32 bad_block_count_met;
+	u32 g_ap_mu;
+};
+
 enum boot_device get_boot_device(void);
 int print_bootinfo(void);