iio: imu: bmi270: fix dev_err_probe error msg

iio: imu: bmi270: fix dev_err_probe error msg

[ Upstream commit 02f86101e430cce9a99a044b483c4ed5b91bb3b8 ]

The bmi270 can be connected to I2C or a SPI interface. If it is a SPI,
during probe, if devm_regmap_init() fails, it should print the "spi"
term rather "i2c".

Fixes: 92cc50a00574 ("iio: imu: bmi270: Add spi driver for bmi270 imu")
Signed-off-by: Rodrigo Gobbi <rodrigo.gobbi.7@gmail.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>