USB host composite: Reosolves last remaining REVISIT design issues.  Compiles clean with no errors and warning and is fully ready for testing.

net/tcp:  tcp_ipvX_bind() not actually using the ported selected with port==0.  Also removes duplicate call to pkt_input().  Issues noted by Pascal Speck.

USB host composite: Save some information that will be needed to create a class-specific configuration.

Merged in david_s5/nuttx-2/david_s5/stm32_otgfsdevc-edited-online-with-bitbu-1472231999710 (pull request #126)

stm32_otgfsdev.c edited online with Bitbucket

dup SOF removed as noted by Sébastien Lorquet