iio: hid-sensors: Added Gyroscope 3D

Added usage id processing for Gyroscope 3D. This uses IIO
interfaces for triggered buffer to present data to user
mode.This uses HID sensor framework for registering callback
events from the sensor hub.
Signed-off-by: srinivas pandruvada <srinivas.pandruvada@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

drivers/iio/Kconfig

@@ -61,5 +61,6 @@ source "drivers/iio/light/Kconfig"
 source "drivers/iio/frequency/Kconfig"
 source "drivers/iio/dac/Kconfig"
 source "drivers/iio/common/Kconfig"
+source "drivers/iio/gyro/Kconfig"
 
 endif # IIO

drivers/iio/Makefile

@@ -17,3 +17,4 @@ obj-y += light/
 obj-y += frequency/
 obj-y += dac/
 obj-y += common/
+obj-y += gyro/

drivers/iio/gyro/Kconfig

+#
+# IIO Digital Gyroscope Sensor drivers configuration
+#
+menu "Digital gyroscope sensors"
+
+config HID_SENSOR_GYRO_3D
+	depends on HID_SENSOR_HUB
+	select IIO_BUFFER
+	select IIO_TRIGGERED_BUFFER
+	select HID_SENSOR_IIO_COMMON
+	tristate "HID Gyroscope 3D"
+	help
+	  Say yes here to build support for the HID SENSOR
+	  Gyroscope 3D.
+
+endmenu

drivers/iio/gyro/Makefile

+#
+# Makefile for industrial I/O gyroscope sensor drivers
+#
+
+obj-$(CONFIG_HID_SENSOR_GYRO_3D) += hid-sensor-gyro-3d.o