Fix TMC_DEBUG undefined report_tmc_status

[thinkyhead]

Addressing #11992
Issue introduced by #11943

The report_tmc_status variable was only defined for MONITOR_DRIVER_STATUS. This PR ensures that the variable is defined based on TMC_DEBUG.

Concise Diff

[teemuatlut]

No it should be under MONITOR_DRIVER_STATUS. That is the function that periodically polls the driver.
The way I see it, the feedback provided is also more closely related to monitoring than the one time debug call.

[thinkyhead]

Well, the flag is only used / settable with TMC_DEBUG, so I'm just following your lead here…

#if ENABLED(TMC_DEBUG)

  . . .

  /**
   * M122 report functions
   */
  void tmc_set_report_status(const bool status) {
    if ((report_tmc_status = status))
      SERIAL_ECHOLNPGM("axis:pwm_scale |status_response|");
  }

  . . .

#endif // TMC_DEBUG

…and…

#if ENABLED(TMC_DEBUG)

#include "../../gcode.h"
#include "../../../feature/tmc_util.h"

/**
 * M122: Debug TMC drivers
 */
void GcodeSuite::M122() {
  if (parser.seen('S'))
    tmc_set_report_status(parser.value_bool());
  else
    tmc_report_all();
}

#endif // TMC_DEBUG

[teemuatlut]

Ah true. Maybe I'll need to revise that once I know what I want to do with the feature. Maybe it should require both config options.