Reset Bluetooth using hardware pin via dts Compared with the previously submitted version, the following information are some specific revision histories V3-->V4 modifications: Modify dt binding format information and the explanation text in the patch V2-->V3 modifications: -Changed the capitalization of co-developer names, using the correct capitalization of abbreviations and full name, and corrected obvious spelling errors. -Add a revision history. -Remove the "BT Driver" in the prefix. -Add the bt-binding document, include inforamtion related to reset pin and compatibility matching. -Add a comment before the schedule_delayed_work function call, although schedule_delayed_work is asynchronous, there is no risk. Even if it is not completed within 200ms, it will only postpone the subsequent probe and will not have any impact. -Add a comment before the btmtk_reset_by_gpio function call, if the compatibility filed or pin cannot be found in the dts files, it can still reset bluetooth using software reset. V2 modifications: Modify gpio to GPIO, SW to software, and fix other obvious spelling errors.
