jtag_vpi: Minor cleanup in jtag_vpi driver
Multiple smaller items addressed in jtag_vpi:
- Several log prints adjusted to make them more clear to the user.
- Ensured that command handlers return ERROR_COMMAND_SYNTAX_ERROR
on incorrect number of arguments.
- Fix in "jtag_vpi set_address": Leave the previously set address
intact on error. Do not revert it to default.
- Minor update of help messages for the TCL commands.
- Updated macro names: SERVER_ADDRESS --> DEFAULT_SERVER_ADDRESS,
the same for SERVER_PORT
Change-Id: Ibe386403a179adab5edb69c77fa408aef55701bd
Signed-off-by: Jan Matyas <matyas@codasip.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/6845
Tested-by: jenkins
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>