AP_IRLock → AP_HAL Relation

File in libraries/AP_IRLock	Includes file in libraries/AP_HAL
AP_IRLock_I2C.cpp	AP_HAL.h
AP_IRLock_I2C.cpp	I2CDevice.h
AP_IRLock_SITL.cpp	AP_HAL.h
AP_IRLock_SITL.h	utility / Socket.h