The assignment of adapter speed 500 was getting overwritten when
max32xxx_common.cfg is sourced at the end.
Also removed incorrect comment.
Change-Id: I49d69073d93dedf28ed69d63ece35758f4707137
Signed-off-by: Mark O'Donovan <shiftee@posteo.net>
Reviewed-on: https://review.openocd.org/c/openocd/+/9322
Tested-by: jenkins
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>