runners: openocd: add support for multiple configuration files

Add support for passing the --config argument to the openocd west runner
multiple times.

This allows for using modular openocd configuration files (e.g. CPU core
configuration in one file, independent of the selected JTAG interface
type).

Signed-off-by: Henrik Brix Andersen <henrik@brixandersen.dk>
1 file changed