iio: Add Usage IDs for HID time sensors.

These are Usage IDs for the attributes year, month, day,
hour, minute and second, needed to read HID time sensors.
Signed-off-by: Alexander Holler <holler@ahsoftware.de>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

include/linux/hid-sensor-ids.h

@@ -66,6 +66,15 @@
 #define HID_USAGE_SENSOR_ORIENT_MAGN_FLUX_Y_AXIS		0x200486
 #define HID_USAGE_SENSOR_ORIENT_MAGN_FLUX_Z_AXIS		0x200487
 
+/* Time (2000a0) */
+#define HID_USAGE_SENSOR_TIME					0x2000a0
+#define HID_USAGE_SENSOR_TIME_YEAR				0x200521
+#define HID_USAGE_SENSOR_TIME_MONTH				0x200522
+#define HID_USAGE_SENSOR_TIME_DAY				0x200523
+#define HID_USAGE_SENSOR_TIME_HOUR				0x200525
+#define HID_USAGE_SENSOR_TIME_MINUTE				0x200526
+#define HID_USAGE_SENSOR_TIME_SECOND				0x200527
+
 /* Units */
 #define HID_USAGE_SENSOR_UNITS_NOT_SPECIFIED			0x00
 #define HID_USAGE_SENSOR_UNITS_LUX				0x01