rockchip: Add rk3568 architecture core

RK3568 is a high-performance and low power quad-core application
processor designed for personal mobile internet device and AIoT
equipments.

Signed-off-by: Joseph Chen <chenjh@rock-chips.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
diff --git a/arch/arm/mach-rockchip/rk3568/Kconfig b/arch/arm/mach-rockchip/rk3568/Kconfig
new file mode 100644
index 0000000..201c63c
--- /dev/null
+++ b/arch/arm/mach-rockchip/rk3568/Kconfig
@@ -0,0 +1,20 @@
+if ROCKCHIP_RK3568
+
+config TARGET_EVB_RK3568
+	bool "RK3568 evaluation board"
+	select BOARD_LATE_INIT
+	help
+	  RK3568 EVB is a evaluation board for Rockchp RK3568.
+
+config ROCKCHIP_BOOT_MODE_REG
+	default 0xfdc20200
+
+config SYS_SOC
+	default "rk3568"
+
+config SYS_MALLOC_F_LEN
+	default 0x2000
+
+source "board/rockchip/evb_rk3568/Kconfig"
+
+endif