hal: Increase direct PCM buffer duration

- Increase direct PCM buffer duration (80ms) to receive
  linear time acks on write for fractional sample rates
- Fixes 44.1 Khz timestamp updates.

Change-Id: I0f657bae0d6e4645f2fcf2b37b97014b89544008
diff --git a/hal/audio_extn/utils.c b/hal/audio_extn/utils.c
index 8c4f313..ab508b7 100644
--- a/hal/audio_extn/utils.c
+++ b/hal/audio_extn/utils.c
@@ -1222,7 +1222,8 @@
      *be multiple of (number of channels * bytes per sample)
      *For writes to succeed, the buffer must be written at address which is multiple of 32
      */
-    fragment_size = ALIGN(fragment_size, (bytes_per_sample * noOfChannels * 32));
+    fragment_size = ALIGN(fragment_size, (bytes_per_sample * noOfChannels));
+    fragment_size = ALIGN(fragment_size, 32);
 
     ALOGI("PCM offload Fragment size to %d bytes", fragment_size);
     return fragment_size;