Now that the stm32f1 code uses the armcm_boot mechanism, it is no
longer necessary for SystemInit to be externally visible.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Update the stm32f1 code to the latest from ST. Merge the
lib/cmsis-stm32f1/ and lib/hal-stm32f1/ into a single lib/stm32f1/
directory. Document all the differences from the pristine upstream
code.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>