[Accton][as7535-28xb] Add onlp_data_path_reset() to support chip reset

[brandonchuang]

• Implements warm reset for MAC, MUX.
• @param unit_id: The warm reset device unit ID, should be 0.
• @param reset_dev: The warm reset device ID, should be 1 to (WARM_RESET_MAX-1).
• @param ret: Return value.