BSDs and Unices defined some non standardised functions and symbols used
for endianness handling: converting from Little Endian to Big Endian,
converting from Host to a specific representation, converting from a
specific representation to Host.
With this commit, a modified version of those symbols provided by
FreeBSD is imported.
The license of the imported code is still 2-Clause BSD.
Signed-off-by: Francesco Giancane <francesco.giancane@accenture.com>
Closes https://github.com/espressif/esp-idf/pull/4784
1173ce32f6