stm32l1: Add ADC interface
stm32l1: Kill aliases
Hi
stm32l1/adc: Kill set_dual_mode
stm32/l1/adc: Fix ADC_SMPR_SMP_*
stm32/l1/adc: Add adc_set_clk_prescale
stm32/l1/adc: Remove adc parameter from common registers
stm32/l1/adc: Fix indentation
stm32/l1: Fix ADC_SR_JCNR name
stm32l1: Fix ADC common register offset
stm32l1: Fix and add some ADC flags
stm32l1: Add some PWR flags
stm32l1: Clear (J)EXTSEL bits