TARGET: Added support Cortex M0 based chips.
TARGET: Added support Cortex M0 based chips.

ongjohn/LibSWD,shangdawei/LibSWD,shangdawei/LibSWD,cedar-renjun/LibSWD,ongjohn/LibSWD,cedar-renjun/LibSWD,shangdawei/LibSWD,cedar-renjun/LibSWD,ongjohn/LibSWD