rtc: hid-sensor-time: stop selecting IIO

Make RTC_DRV_HID_SENSOR_TIME depend on IIO and HID_SENSOR_HUB to remove
possible circular dependencies as this is the only symbol selecting those.

Suggested-by: Florian Lohoff <f@zz.de>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>