Merge pull request #9728 from aabadie/pr/boards/stm32_common_i2c

boards/common/stm32/include/cfg_i2c1_pb8_pb9.h

boards/common/stm32/include/f4/cfg_clock_100_8_1.h

boards/common/stm32/include/f4/cfg_clock_84_8_1.h

boards/common/stm32/include/f4/cfg_clock_96_8_1.h

boards/nucleo-f401re/include/periph_conf.h

boards/nucleo-f410rb/include/periph_conf.h

boards/nucleo-f411re/include/periph_conf.h

boards/nucleo-f412zg/include/periph_conf.h

boards/nucleo-f413zh/include/periph_conf.h

boards/nucleo-f429zi/include/periph_conf.h

boards/nucleo-f446re/include/periph_conf.h

boards/nucleo-f446ze/include/periph_conf.h

boards/nucleo-f722ze/include/periph_conf.h

boards/nucleo-f746zg/Makefile.features

boards/nucleo-f746zg/include/periph_conf.h

boards/nucleo-l476rg/include/periph_conf.h

boards/nucleo-l496zg/Makefile.features

boards/nucleo-l496zg/include/periph_conf.h