Disable fast capture by default for 8974

Fast capture interacts poorly with AEC on 8974.

Frame count is changed from 240 to 480 (10 ms), which means
fast capture thread will not be started by default.
Fast capture thread is only used if frame count is strictly < 10 ms.

Fast capture feature can be re-enabled for specific app testing
by setting property audio_hal.in_period_size=240
in /data/local.prop

Bug: 15591052
Change-Id: I678bf233597c63dc414cab9f64b5ee494eb8701d
diff --git a/hal/msm8974/platform.h b/hal/msm8974/platform.h
index 19f5d0b..8c052a5 100644
--- a/hal/msm8974/platform.h
+++ b/hal/msm8974/platform.h
@@ -125,7 +125,7 @@
 #define AUDIO_CAPTURE_PERIOD_COUNT 2
 
 #define LOW_LATENCY_CAPTURE_SAMPLE_RATE 48000
-#define LOW_LATENCY_CAPTURE_PERIOD_SIZE 240
+#define LOW_LATENCY_CAPTURE_PERIOD_SIZE 480
 #define LOW_LATENCY_CAPTURE_USE_CASE 1
 
 #endif // QCOM_AUDIO_PLATFORM_H