Configure the TRACECONFIG.TRACEPORTSPEED register depending on the
trace clock speed. Also catch invalid trace clock speeds.
Change-Id: I1ece1cc59da539732d2d71f296fd55799c195387
Signed-off-by: Marc Schink <dev@zapb.de>
Reviewed-on: https://review.openocd.org/c/openocd/+/8256
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
Tested-by: jenkins