Typically, OpenOCD is already performing a reset on connect. A
`reset halt` to bring the target to a `halt` state for flashing will
result in the device going through a second reset cycle. This can be
problematic with some device, such as the CC26xx MCUs. For these
devices, an `OPENOCD_CMD_RESET_HALT := -c 'halt'` will avoid the second
reset that is causing the issues.
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