Michael Brown
7774ceed2f
[settings] Use hex_decode() to parse hex settings
Use hex_decode() to parse "hex" and "hexhyp" settings. Note that this
parser is stricter than the old parser; it now requires exactly two
hex digits for each byte. (The old parser was based upon strtoul()
and so would allow leading whitespace and a leading plus or minus
sign.)
Signed-off-by: Michael Brown <mcb30@ipxe.org>