freemodbus: fix long buffer failure

check master read write functions with array of registers)
fix master serial processing code and modbus controller to work with register array
modbus_master: add reading and writing of test value array (58 registers) to check failure is gone
remove parameter temporary buffer from modbus controller to allow more than 24 byte writes
driver: fix issue with TOUT feature
driver: fix uart_rx_timeout issue
driver: fix issue with rxfifo_tout_int_raw not triggered when received fifo_len = 120 byte and all bytes read out of fifo as result of rxfifo_full_int_raw
driver: add function uart_internal_set_always_rx_timeout() to always handle tout interrupt
examples: call uart_internal_set_always_rx_timeout() to handle tout interrupt correctly
examples: update examples to use tout feature
driver: reflect changes of uart_set_always_rx_timeout() function, change uart.c
driver: change conditions to trigger workaround for tout feature in uart.c
driver: change uart_set_always_rx_timeout()
freemodbus: fix tabs, remove commented code
driver: remove uart_ll_is_rx_idle()


* Original commit: espressif/esp-idf@3abdd2207d

examples/protocols/modbus/serial/example_test.py

@@ -41,7 +41,7 @@ expect_dict_master_err = {"READ_PAR_ERR": (u'263', u'ESP_ERR_TIMEOUT'),
 # The dictionary for regular expression patterns to check in listing
 pattern_dict_master_ok = {"START": (r'.*I \([0-9]+\) MASTER_TEST: Start modbus test...'),
                           "READ_PAR_OK": (r'.*I\s\([0-9]+\) MASTER_TEST: Characteristic #[0-9]+ [a-zA-Z0-9_]+'
-                                          r'\s\([a-zA-Z\%\/]+\) value = [a-zA-Z0-9\.]+ \(0x[a-zA-Z0-9]+\) read successful.'),
+                                          r'\s\([a-zA-Z\%\/]+\) value = [a-zA-Z0-9\.\s]*\(0x[a-zA-Z0-9]+\) read successful.'),
                           "ALARM_MSG": (r'.*I \([0-9]*\) MASTER_TEST: Alarm triggered by cid #([0-9]+).')}
 
 pattern_dict_master_err = {"READ_PAR_ERR_TOUT": (r'.*E \([0-9]+\) MASTER_TEST: Characteristic #[0-9]+'