HAL_Linux: implement device IDs for I2C and SPI

libraries/AP_HAL_Linux/I2CDevice.cpp

@@ -137,6 +137,14 @@ int I2CBus::open(uint8_t n)
     return fd;
 }
 
+I2CDevice::I2CDevice(I2CBus &bus, uint8_t address)
+    : _bus(bus)
+    , _address(address)
+{
+    set_device_bus(bus.bus);
+    set_device_address(address);
+}
+    
 I2CDevice::~I2CDevice()
 {
     // Unregister itself from the I2CDeviceManager

libraries/AP_HAL_Linux/I2CDevice.h

@@ -38,11 +38,7 @@ public:
 
     /* AP_HAL::I2CDevice implementation */
 
-    I2CDevice(I2CBus &bus, uint8_t address)
+    I2CDevice(I2CBus &bus, uint8_t address);
-        : _bus(bus)
-        , _address(address)
-    {
-    }
 
     ~I2CDevice();
 

libraries/AP_HAL_Linux/SPIDevice.cpp

@@ -212,6 +212,9 @@ SPIDevice::SPIDevice(SPIBus &bus, SPIDesc &device_desc)
     : _bus(bus)
     , _desc(device_desc)
 {
+    set_device_bus(_bus.bus);
+    set_device_address(_desc.subdev);
+    
     if (_desc.cs_pin != SPI_CS_KERNEL) {
         _cs = hal.gpio->channel(_desc.cs_pin);
         if (!_cs) {