clk: rockchip: Add clock controller for the RK3576

Add the clock and reset tree definitions for the new RK3576
SoC.

As opposed to the other rockchip CRU drivers, the GRF node is looked up
via compatible instead of a phandle, which simplifies the device tree
bindings.

Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
Signed-off-by: Finley Xiao <finley.xiao@rock-chips.com>
Signed-off-by: YouMin Chen <cym@rock-chips.com>
Signed-off-by: Liang Chen <cl@rock-chips.com>
Signed-off-by: Sugar Zhang <sugar.zhang@rock-chips.com>
Signed-off-by: Detlev Casanova <detlev.casanova@collabora.com>
Reviewed-by: Elaine Zhang <zhangqing@rock-chips.com>
Tested-by: Shawn Lin <shawn.lin@rock-chips.com>
Acked-by: Dragan Simic <dsimic@manjaro.org>
Link: https://lore.kernel.org/r/0102019199a7781a-888440f0-a3f7-4a7d-a831-491260cbdfe7-000000@eu-west-1.amazonses.com
[dropped additional blank line at EOF in rst-rk3576.c
 dropped the whole (non-)working as module part]
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

Author: Elaine Zhang

drivers/clk/rockchip/Kconfig

@@ -100,6 +100,13 @@ config CLK_RK3568
 	help
 	  Build the driver for RK3568 Clock Driver.
 
+config CLK_RK3576
+	bool "Rockchip RK3576 clock controller support"
+	depends on ARM64 || COMPILE_TEST
+	default y
+	help
+	  Build the driver for RK3576 Clock Driver.
+
 config CLK_RK3588
 	bool "Rockchip RK3588 clock controller support"
 	depends on ARM64 || COMPILE_TEST

drivers/clk/rockchip/Makefile

@@ -28,4 +28,5 @@ obj-$(CONFIG_CLK_RK3328)        += clk-rk3328.o
 obj-$(CONFIG_CLK_RK3368)        += clk-rk3368.o
 obj-$(CONFIG_CLK_RK3399)        += clk-rk3399.o
 obj-$(CONFIG_CLK_RK3568)	+= clk-rk3568.o
+obj-$(CONFIG_CLK_RK3576)	+= clk-rk3576.o rst-rk3576.o
 obj-$(CONFIG_CLK_RK3588)	+= clk-rk3588.o rst-rk3588.o