iio: bmc150: Use i2c regmap

This replaces all usage of direct i2c accesses with regmap accesses.

Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Tested-by: Irina Tirdea <irina.tirdea@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
diff --git a/drivers/iio/accel/Kconfig b/drivers/iio/accel/Kconfig
index 8172ae5..dd3e293 100644
--- a/drivers/iio/accel/Kconfig
+++ b/drivers/iio/accel/Kconfig
@@ -22,6 +22,8 @@
 	depends on I2C
 	select IIO_BUFFER
 	select IIO_TRIGGERED_BUFFER
+	select REGMAP
+	select REGMAP_I2C
 	help
 	  Say yes here to build support for the following Bosch accelerometers:
 	  BMC150, BMI055, BMA250E, BMA222E, BMA255, BMA280.