Ieee802154

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

photon/wlan: disable network logs and add nsh over telnet

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

TCP: Fix some potential error conditions that could result from deferring the connection until the full 3-way handshake has completed.

Syslog interrrupt buffer:  eliminate a warning about an uninitialized variable; simply some related logic.

libc/wchar: Versions mbrlen and mbsrtowcs taken and adapted from FreeBSD code (at https://github.com/freebsd/freebsd/)

libc/wchar: Versions mbrlen and mbsrtowcs taken and adapted from FreeBSD code (at https://github.com/freebsd/freebsd/)

Kconfig/deconfigs:  Add CONFIG_ARCH_TOOLCHAIN_GNU to indicate that the toolchain is based on GNU gcc/as/ld.  This is in addition to the CPU-specific versions of the same definition.

STM32F410.  Add support for STM32Fr10.  STM32F410 is a version of STM32F4 with 32 KB of RAM and 62 or 128 KB of flash.

kinetis:K66 GPIO and pin mux cleanup

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

Fix the libcanard link version to get it compiling without errors.

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

Signed-off-by: Alan Carvalho de Assis <acassis@gmail.com>