Upstream kinetis

TCP: tcp_input() now receives IP domain as an input parameter vs. deriving from the IP header length.

Fixes in network library and tcp stack.

Approved-by: Gregory Nutt <gnutt@nuttx.org>

Signed-off-by: Masayuki Ishikawa <masayuki.ishikawa@gmail.com>

This fix sets h_name in struct hostent returned by gethostbyname()

Signed-off-by: Masayuki Ishikawa <masayuki.ishikawa@gmail.com>

Canbus

Approved-by: Gregory Nutt <gnutt@nuttx.org>

Canbus

Approved-by: Gregory Nutt <gnutt@nuttx.org>

STM32L4:  Add IWDG peripheral.  This is the same as for STM32 except that prescale and reload can be
changed after watchdog has been started, as this seems to work on L4.

netdb: Fix time info in lib_dnscache.c

Approved-by: Gregory Nutt <gnutt@nuttx.org>

Signed-off-by: Masayuki Ishikawa <masayuki.ishikawa@gmail.com>

Bug fix by sony

Approved-by: Gregory Nutt <gnutt@nuttx.org>

Jira: PDFW15IS-265
Coverity-ID: 10590 10589
Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>

Jira: PDFW15IS-265
Coverity-ID: 10597
Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>

Jira: PDFW15IS-265
Coverity-ID: 10696
Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>

This is based on a patch by Taras Drozdovsky.  Basically, the delay that was added during the integration of the CDC/ACM host driver was interfering with streaming audio.  That delay was put there to prevent build endpoints from hogging the system bandwidth.  So what do we do?  Do we hog the bandwidth or do we insert arbitrarity delays.  I think both ideas such.