[media] em28xx-camera: fix return value checks on sensor probing

Since commit e63b009d6e the returned error code in case of not connected/responding
i2c clients is ENXIO isntead of ENODEV, which causes several error messages on
sensor probing.
Fix the i2c return value checks on sensor probing to silence these warnings.

Signed-off-by: Frank Schäfer <fschaefer.oss@googlemail.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

drivers/media/usb/em28xx/em28xx-camera.c

@@ -120,7 +120,7 @@ static int em28xx_probe_sensor_micron(struct em28xx *dev)
 		reg = 0x00;
 		ret = i2c_master_send(&client, &reg, 1);
 		if (ret < 0) {
-			if (ret != -ENODEV)
+			if (ret != -ENXIO)
 				em28xx_errdev("couldn't read from i2c device 0x%02x: error %i\n",
 					      client.addr << 1, ret);
 			continue;
@@ -218,7 +218,7 @@ static int em28xx_probe_sensor_omnivision(struct em28xx *dev)
 		reg = 0x1c;
 		ret = i2c_smbus_read_byte_data(&client, reg);
 		if (ret < 0) {
-			if (ret != -ENODEV)
+			if (ret != -ENXIO)
 				em28xx_errdev("couldn't read from i2c device 0x%02x: error %i\n",
 					      client.addr << 1, ret);
 			continue;