Update incomplete Host mode Audio demos to use the correct class driver...

Update incomplete Host mode Audio demos to use the correct class driver Endpoint Sampling Frequency Control value constant.

Demos/Host/Incomplete/AudioInputHost/AudioInputHost.c

@@ -185,7 +185,7 @@ void Audio_Task(void)
 				{
 					.bmRequestType = (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_ENDPOINT),
 					.bRequest      = AUDIO_REQ_SetCurrent,
-					.wValue        = 0x0100,
+					.wValue        = (AUDIO_EPCONTROL_SamplingFreq << 8),
 					.wIndex        = StreamingEndpointAddress,
 					.wLength       = sizeof(USB_Audio_SampleFreq_t),
 				};

Demos/Host/Incomplete/AudioOutputHost/AudioOutputHost.c

@@ -186,7 +186,7 @@ void Audio_Task(void)
 				{
 					.bmRequestType = (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_ENDPOINT),
 					.bRequest      = AUDIO_REQ_SetCurrent,
-					.wValue        = 0x0100,
+					.wValue        = (AUDIO_EPCONTROL_SamplingFreq << 8),
 					.wIndex        = StreamingEndpointAddress,
 					.wLength       = sizeof(USB_Audio_SampleFreq_t),
 				};