Add support for multiple types of signatures (binary or ascii)
in export_pubkey(). There is no change in behaviour for the function,
the previous implicit default is the new parameter "armor" default.
(From OE-Core rev: 95ba4a982b887444908207e3180fe4bc46281d3b)
Signed-off-by: Ioan-Adrian Ratiu <adrian.ratiu@ni.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>