First commit of ADC for G0. Have it working basically. Need to make changes regarding adccmn stuff.
Added changes to make stm32_adc.c compatible with both G0 and other families.
Add oversampling support. This is for G0 and L0. Add ADC oversampling to Kconfig. Use adccmn_modifyreg for all, updated hw file to accomodate G0.
Style fixes. Move init of oversampling to a function, and call it if OVERSAMPLE is configured.
Limited changes to stm32_bringup.c
Style fixes to hardware/stm32_adc.h
Changed nucleo-g0b1re to run at 64 MHz. Fixed errors in clock setup. Added defines for setting up ADC clock.
Added code for STM32G0 ADC clock configuration.
Added adc_ckmode_cfg function. ckmode bits were previously neglected, assuming async clock to ADC was used. Added other feedback from pull request #16500.
Added feedback from pull request #16500.
Changed format of STM32F0L0G0_HAVE_ADC_OVERSAMPLE config.
Removed FARs from ioc_set_oversample.
Fixed formatting of helps in Kconfig. Adjusted spacing on help content.
Simplified adc_common_cfg. CCR_PRESC relies on board.h
Fixed formatting
Add ADC pinmaps for stm32g0