clk: add driver for stm32mp1

add RCC clock driver for STMP32MP157
- base on driver model = UCLASS_CLK
- support ops to enable, disable and get rate
  of all SOC clock needed by U-Boot

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>

MAINTAINERS

@@ -199,6 +199,7 @@ ARM STM STM32MP
 M:	Patrick Delaunay <patrick.delaunay@st.com>
 S:	Maintained
 F:	arch/arm/mach-stm32mp
+F:	clk/clk_stm32mp1.c
 F:	ram/stm32mp1
 
 ARM STM STV0991

drivers/clk/Kconfig

@@ -75,6 +75,14 @@ config CLK_ZYNQMP
 	  This clock driver adds support for clock realted settings for
 	  ZynqMP platform.
 
+config CLK_STM32MP1
+	bool "Enable RCC clock driver for STM32MP1"
+	depends on ARCH_STM32MP && CLK
+	default y
+	help
+	  Enable the STM32 clock (RCC) driver. Enable support for
+	  manipulating STM32MP1's on-SoC clocks.
+
 source "drivers/clk/tegra/Kconfig"
 source "drivers/clk/uniphier/Kconfig"
 source "drivers/clk/exynos/Kconfig"

drivers/clk/Makefile

@@ -17,6 +17,7 @@ obj-$(CONFIG_CLK_EXYNOS) += exynos/
 obj-$(CONFIG_CLK_HSDK) += clk-hsdk-cgu.o
 obj-$(CONFIG_CLK_RENESAS) += renesas/
 obj-$(CONFIG_CLK_STM32F) += clk_stm32f.o
+obj-$(CONFIG_CLK_STM32MP1) += clk_stm32mp1.o
 obj-$(CONFIG_CLK_UNIPHIER) += uniphier/
 obj-$(CONFIG_CLK_ZYNQ) += clk_zynq.o
 obj-$(CONFIG_CLK_ZYNQMP) += clk_zynqmp.o