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/Kconfig b/arch/arm/mach-rockchip/Kconfig
index 407bf3f..4a2d35a 100644
--- a/arch/arm/mach-rockchip/Kconfig
+++ b/arch/arm/mach-rockchip/Kconfig
@@ -257,6 +257,23 @@
 	  and video codec support. Peripherals include Gigabit Ethernet,
 	  USB2 host and OTG, SDIO, I2S, UARTs, SPI, I2C and PWMs.
 
+config ROCKCHIP_RK3568
+	bool "Support Rockchip RK3568"
+	select ARM64
+	select CLK
+	select PINCTRL
+	select RAM
+	select REGMAP
+	select SYSCON
+	select BOARD_LATE_INIT
+	imply ROCKCHIP_COMMON_BOARD
+	help
+	  The Rockchip RK3568 is a ARM-based SoC with quad-core Cortex-A55,
+	  including NEON and GPU, 512K L3 cache, Mali-G52 based graphics,
+	  two video interfaces supporting HDMI and eDP, several DDR3 options
+	  and video codec support. Peripherals include Gigabit Ethernet,
+	  USB2 host and OTG, SDIO, I2S, UARTs, SPI, I2C and PWMs.
+
 config ROCKCHIP_RV1108
 	bool "Support Rockchip RV1108"
 	select CPU_V7A