audio: refine the period size for raw playback

For raw playback, the buffer size needs to equal to the
ring buffer size. AoC changes the buffer size to 16384 bytes,
but it cannot be divisible by 48(1ms frames with 48000 sample rate).
Use the period size(frame couts) from configuration file.

Bug: 194398677
Test: OboeTester->TEST OUTPUT
Change-Id: I07f0cb7d5904e4e3ef78b9a15d31590fdd5a9087
4 files changed