Porting Miosix to stm32h7 -- second part

miosix/arch/cortexM7_stm32h7/common/arch_settings.h

miosix/arch/cortexM7_stm32h7/common/drivers/pll.cpp

miosix/arch/cortexM7_stm32h7/common/drivers/pll.h

...x/arch/cortexM7_stm32h7/common/interfaces-impl/delays.cpp

...rch/cortexM7_stm32h7/common/interfaces-impl/gpio_impl.cpp

.../arch/cortexM7_stm32h7/common/interfaces-impl/gpio_impl.h

...h/cortexM7_stm32h7/common/interfaces-impl/portability.cpp

...ortexM7_stm32h7/common/interfaces-impl/portability_impl.h

...h/cortexM7_stm32h7/stm32h753xi_eval/core/stage_1_boot.cpp

...h7/stm32h753xi_eval/interfaces-impl/arch_registers_impl.h

...cortexM7_stm32h7/stm32h753xi_eval/interfaces-impl/bsp.cpp

...texM7_stm32h7/stm32h753xi_eval/interfaces-impl/bsp_impl.h

miosix/arch/cortexM7_stm32h7/stm32h753xi_eval/openocd.cfg

...ch/cortexM7_stm32h7/stm32h753xi_eval/stm32_2m+512k_rom.ld

...g/arch/cortexM7_stm32h7/stm32h753xi_eval/board_settings.h