sdp3x issue I2C general call reset if alone

platforms/common/include/px4_platform_common/px4_work_queue/WorkItem.hpp

@@ -122,6 +122,8 @@ protected:
 	bool Init(const wq_config_t &config);
 	void Deinit();
 
+	bool alone() { return _wq && (_wq->count() <= 1); }
+
 	float elapsed_time() const;
 	float average_rate() const;
 	float average_interval() const;

platforms/common/include/px4_platform_common/px4_work_queue/WorkQueue.hpp

@@ -73,6 +73,8 @@ public:
 
 	void print_status(bool last = false);
 
+	size_t count();
+
 	// WorkQueues sorted numerically by relative priority (-1 to -255)
 	bool operator<=(const WorkQueue &rhs) const { return _config.relative_priority >= rhs.get_config().relative_priority; }