Fix comment of tested errors in asm src.
List all relevant errors in FLASH_ERROR mask: FLASH_PROGERR was missing
and any trial to re-program already programmed double word ended up
in the error bit held uncleared and flash write permanetly repeating
the error message until reset.
Lock the bank also after unsuccesfull write_block run.
Set async target algo block size to size of double word.
Remove warning in case of write_block success. In case of error
use LOG_ERROR instead of warning.
Signed-off-by: Tomas Vanek <email@example.com>
Reviewed-by: Tarek BOCHKATI <firstname.lastname@example.org>