If defined, use GPG_PATH as the gpg home directory when signing package
feeds. This setting is only used by package_manager if package feed
singning has been enabled, i.e. PACKAGE_FEED_SIGN="1".
(From OE-Core rev: 2c94853e4c8e92ac5fe4af7b25e2ce8853a4025b)
Signed-off-by: Markus Lehtonen <markus.lehtonen@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>