AP_Baro: Add BME280 ID in BMP280

BME280 has the same memory layout than BMP280,
but with more features.

Signed-off-by: Patrick José Pereira <patrickelectric@gmail.com>

libraries/AP_Baro/AP_Baro_BMP280.cpp

@@ -34,6 +34,7 @@ extern const AP_HAL::HAL &hal;
 #define BMP280_FILTER_COEFFICIENT 2
 
 #define BMP280_ID            0x58
+#define BME280_ID            0x60
 
 #define BMP280_REG_CALIB     0x88
 #define BMP280_REG_ID        0xD0
@@ -77,8 +78,8 @@ bool AP_Baro_BMP280::_init()
 
     uint8_t whoami;
     if (!_dev->read_registers(BMP280_REG_ID, &whoami, 1)  ||
-        whoami != BMP280_ID) {
-        // not a BMP280
+        (whoami != BME280_ID && whoami != BMP280_ID)) {
+        // not a BMP280 or BME280
         return false;
     }