default or selected kernelversion does not have config value CONFIG_COMMON_CLK_STM32MP215.
Result is shown for kernelversion 6.18-rc7

Clock driver for stm32mp21x clocks

modulename: clk-stm32mp21.ko

configname: CONFIG_COMMON_CLK_STM32MP215

Linux Kernel Configuration
└─>Device Drivers
└─>Common Clock Framework
└─>Clock support for common STM32MP clocks
└─>Clock driver for stm32mp21x clocks
In linux kernel since version 6.12.57 (release Date: 2025-11-02)  
Support for stm32mp21x SoC family clocks

source code:
drivers/clk/stm32/
depends
CONFIG_COMMON_CLK
CONFIG_COMMON_CLK_STM32MP
CONFIG_ARM or CONFIG_ARM64 or CONFIG_COMPILE_TEST