Merge latest changes from bugfix

[thinkyhead]

Merged, and submitting as a PR for convenience.

[thinkyhead]

The reason for the Travis CI errors is that the TMC2130 tests are actually being run now, thanks to improvements to the set_opt commands (71d06ef). As a result some bugs in tmc_util.cpp are being exposed.

Marlin/src/feature/tmc_util.cpp:47:8: error: 'template<char AXIS_LETTER, char DRIVER_ID> class TMCStorage' used without template parameters
bool TMCStorage::report_tmc_status = false;
^~~~~~~~~~
Marlin/src/feature/tmc_util.cpp: In function 'uint8_t get_status_response(TMC2130Stepper&)':
Marlin/src/feature/tmc_util.cpp:57:72: error: 'uint8_t TMC2130Stepper::status_response' is protected within this context
static uint8_t get_status_response(TMC2130Stepper &st) { return st.status_response & 0xF; }
^~~~~~~~~~~~~~~
In file included from Marlin/src/feature/tmc_util.h:28:0,
from Marlin/src/feature/tmc_util.cpp:27:
.piolibdeps/TMCStepper_ID5513/src/TMCStepper.h:334:11: note: declared protected here
uint8_t status_response;
^~~~~~~~~~~~~~~
Marlin/src/feature/tmc_util.cpp: In function 'TMC_driver_data get_driver_data(TMC2130Stepper&)':
Marlin/src/feature/tmc_util.cpp:69:27: error: 'uint8_t TMC2130Stepper::status_response' is protected within this context
data.is_error = (st.status_response & DRIVER_ERROR_bm) >> DRIVER_ERROR_bp;
^~~~~~~~~~~~~~~
In file included from Marlin/src/feature/tmc_util.h:28:0,
from Marlin/src/feature/tmc_util.cpp:27:
.piolibdeps/TMCStepper_ID5513/src/TMCStepper.h:334:11: note: declared protected here
uint8_t status_response;
^~~~~~~~~~~~~~~
Marlin/src/feature/tmc_util.cpp: In function 'void monitor_tmc_driver()':
Marlin/src/feature/tmc_util.cpp:208:11: error: 'template<char AXIS_LETTER, char DRIVER_ID> class TMCStorage' used without template parameters
if (TMCStorage::report_tmc_status) SERIAL_EOL();
^~~~~~~~~~
Marlin/src/feature/tmc_util.cpp: In function 'void tmc_set_report_status(bool)':
Marlin/src/feature/tmc_util.cpp:503:10: error: 'template<char AXIS_LETTER, char DRIVER_ID> class TMCStorage' used without template parameters
if ((TMCStorage::report_tmc_status = status))
^~~~~~~~~~
*** [.pioenvs/LPC1768/src/src/feature/tmc_util.o] Error 1