clk: rockchip: Add clock controller for the RV1106

Add the clock and reset controller driver for the Rockchip RV1106,
based on the vendor kernel from the Luckfox Pico SDK [1] at commit
824b817f8 (a Linux 5.10.160 kernel tree), adapted to the upstream
clock framework.

The MMC drive and sample phase clocks have their control registers in
the GRF region. The CRU provides these clocks itself, using the syscon
referenced by the rockchip,grf property as an auxiliary regmap, in the
same way as the RK3528.

The RV1103 is a package variant of the RV1106 and uses the same CRU.

[1] https://github.com/LuckfoxTECH/luckfox-pico

Signed-off-by: Simon Glass <sjg@chromium.org>
Link: https://patch.msgid.link/20260729133609.3465563-3-sjg@chromium.org
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

drivers/clk/rockchip/Kconfig

@@ -23,6 +23,13 @@ config CLK_RV1103B
 	help
 	  Build the driver for RV1103B Clock Driver.
 
+config CLK_RV1106
+	bool "Rockchip RV1106 clock controller support"
+	depends on ARM || COMPILE_TEST
+	default y
+	help
+	  Build the driver for RV1106 Clock Driver.
+
 config CLK_RV110X
 	bool "Rockchip RV110x clock controller support"
 	depends on ARM || COMPILE_TEST

drivers/clk/rockchip/Makefile

@@ -19,6 +19,7 @@ clk-rockchip-$(CONFIG_RESET_CONTROLLER) += softrst.o
 
 obj-$(CONFIG_CLK_PX30)          += clk-px30.o
 obj-$(CONFIG_CLK_RV1103B)	+= clk-rv1103b.o
+obj-$(CONFIG_CLK_RV1106)	+= clk-rv1106.o
 obj-$(CONFIG_CLK_RV110X)        += clk-rv1108.o
 obj-$(CONFIG_CLK_RV1126)        += clk-rv1126.o
 obj-$(CONFIG_CLK_RV1126B)	+= clk-rv1126b.o rst-rv1126b.o