Retry SWJ sequence if read of DP IDCODE fails.
Retry SWJ sequence if read of DP IDCODE fails.

mbedmicro/pyOCD,mesheven/pyOCD,mbedmicro/pyOCD,pyocd/pyOCD,mbedmicro/pyOCD,flit/pyOCD,pyocd/pyOCD,mesheven/pyOCD,mesheven/pyOCD,flit/pyOCD