Convert all comments into "doxygen-ready" comments.

Bug: 36453077
Test: mma
Change-Id: I0b1f77dfae5d2258969e33d85ecf45401ffbdfaa

• audio/2.0/IDevice.hal[diff]
• audio/2.0/IDevicesFactory.hal[diff]
• audio/2.0/IPrimaryDevice.hal[diff]
• audio/2.0/IStream.hal[diff]
• audio/2.0/IStreamIn.hal[diff]
• audio/2.0/IStreamOut.hal[diff]
• audio/2.0/IStreamOutCallback.hal[diff]
• audio/2.0/types.hal[diff]
• audio/common/2.0/types.hal[diff]
• audio/effect/2.0/IAcousticEchoCancelerEffect.hal[diff]
• audio/effect/2.0/IAutomaticGainControlEffect.hal[diff]
• audio/effect/2.0/IBassBoostEffect.hal[diff]
• audio/effect/2.0/IEffect.hal[diff]
• audio/effect/2.0/IEffectBufferProviderCallback.hal[diff]
• audio/effect/2.0/IEffectsFactory.hal[diff]
• audio/effect/2.0/IEnvironmentalReverbEffect.hal[diff]
• audio/effect/2.0/IEqualizerEffect.hal[diff]
• audio/effect/2.0/ILoudnessEnhancerEffect.hal[diff]
• audio/effect/2.0/INoiseSuppressionEffect.hal[diff]
• audio/effect/2.0/IVirtualizerEffect.hal[diff]
• audio/effect/2.0/IVisualizerEffect.hal[diff]
• audio/effect/2.0/types.hal[diff]
• automotive/evs/1.0/types.hal[diff]
• automotive/vehicle/2.0/IVehicle.hal[diff]
• automotive/vehicle/2.0/IVehicleCallback.hal[diff]
• automotive/vehicle/2.0/types.hal[diff]
• automotive/vehicle/2.1/IVehicle.hal[diff]
• automotive/vehicle/2.1/types.hal[diff]
• biometrics/fingerprint/2.1/IBiometricsFingerprint.hal[diff]
• biometrics/fingerprint/2.1/types.hal[diff]
• broadcastradio/1.0/IBroadcastRadio.hal[diff]
• broadcastradio/1.0/IBroadcastRadioFactory.hal[diff]
• broadcastradio/1.0/ITuner.hal[diff]
• broadcastradio/1.0/ITunerCallback.hal[diff]
• broadcastradio/1.0/types.hal[diff]
• broadcastradio/1.1/IBroadcastRadio.hal[diff]
• broadcastradio/1.1/ITunerCallback.hal[diff]
• camera/device/1.0/types.hal[diff]
• camera/device/3.2/types.hal[diff]
• configstore/1.0/ISurfaceFlingerConfigs.hal[diff]
• contexthub/1.0/IContexthub.hal[diff]
• contexthub/1.0/IContexthubCallback.hal[diff]
• dumpstate/1.0/IDumpstateDevice.hal[diff]
• gatekeeper/1.0/IGatekeeper.hal[diff]
• gatekeeper/1.0/types.hal[diff]
• gnss/1.0/IAGnss.hal[diff]
• gnss/1.0/IAGnssCallback.hal[diff]
• gnss/1.0/IAGnssRil.hal[diff]
• gnss/1.0/IAGnssRilCallback.hal[diff]
• gnss/1.0/IGnss.hal[diff]
• gnss/1.0/IGnssBatching.hal[diff]
• gnss/1.0/IGnssBatchingCallback.hal[diff]
• gnss/1.0/IGnssCallback.hal[diff]
• gnss/1.0/IGnssConfiguration.hal[diff]
• gnss/1.0/IGnssDebug.hal[diff]
• gnss/1.0/IGnssGeofenceCallback.hal[diff]
• gnss/1.0/IGnssGeofencing.hal[diff]
• gnss/1.0/IGnssMeasurement.hal[diff]
• gnss/1.0/IGnssMeasurementCallback.hal[diff]
• gnss/1.0/IGnssNavigationMessage.hal[diff]
• gnss/1.0/IGnssNavigationMessageCallback.hal[diff]
• gnss/1.0/IGnssNi.hal[diff]
• gnss/1.0/IGnssNiCallback.hal[diff]
• gnss/1.0/IGnssXtra.hal[diff]
• gnss/1.0/IGnssXtraCallback.hal[diff]
• gnss/1.0/types.hal[diff]
• graphics/allocator/2.0/IAllocator.hal[diff]
• graphics/allocator/2.0/IAllocatorClient.hal[diff]
• graphics/allocator/2.0/types.hal[diff]
• graphics/bufferqueue/1.0/IGraphicBufferProducer.hal[diff]
• graphics/common/1.0/types.hal[diff]
• graphics/composer/2.1/IComposer.hal[diff]
• graphics/composer/2.1/IComposerCallback.hal[diff]
• graphics/composer/2.1/IComposerClient.hal[diff]
• graphics/composer/2.1/types.hal[diff]
• graphics/mapper/2.0/IMapper.hal[diff]
• graphics/mapper/2.0/types.hal[diff]
• health/1.0/types.hal[diff]
• keymaster/3.0/types.hal[diff]
• light/2.0/types.hal[diff]
• memtrack/1.0/IMemtrack.hal[diff]
• memtrack/1.0/types.hal[diff]
• power/1.0/IPower.hal[diff]
• power/1.0/types.hal[diff]
• sensors/1.0/ISensors.hal[diff]
• sensors/1.0/types.hal[diff]
• soundtrigger/2.0/ISoundTriggerHw.hal[diff]
• soundtrigger/2.0/ISoundTriggerHwCallback.hal[diff]
• soundtrigger/2.0/types.hal[diff]
• thermal/1.0/IThermal.hal[diff]
• tv/cec/1.0/IHdmiCec.hal[diff]
• tv/cec/1.0/IHdmiCecCallback.hal[diff]
• tv/cec/1.0/types.hal[diff]
• tv/input/1.0/ITvInput.hal[diff]
• tv/input/1.0/ITvInputCallback.hal[diff]
• tv/input/1.0/types.hal[diff]
• usb/1.0/IUsb.hal[diff]
• usb/1.0/IUsbCallback.hal[diff]
• usb/1.0/types.hal[diff]