Fix http streaming with lc823450
* arch/arm/src/lc823450: Change C-Buffer under-level control
The under-level setting was changed from 1KB to 55KB.
In previous implementation, the setting can ben changed
by the tx threshold but it is fixed at startup.
Also, check write size and adjust alignment if needed.
Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>
* configs/lc823450-xgevk: Change IOB related params for rndis.
Since TCP flow control scheme was changed, HTTP audio streaming
has not been working. These IOB params are not optimized but
HTTP audio streaming now works.
Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>
Approved-by: GregoryN <gnutt@nuttx.org>