Needing to set the branch where a specific SHA1 revision is contained is
a unnecessary constraint that can be bypassed setting 'nobranch=1' in
the SRC_URI.
We do that for all the external repos (GitHub) plus the internal ones
for the im-xbootlets and the atheros kernel module (as those two repos
are stable enough and we are not developing actively on them).
For U-Boot and Linux we keep the SRCBRANCH framework for internal repos
as this is needed for the AUTOREV yocto feature.
Signed-off-by: Javier Viguera <javier.viguera@digi.com>
Starting with Yocto 1.6 there is a need to configure in which branch a
specific SHA1 revision is included. We need a framework to set such
branches both for internal git repos and for external ones (Github).
If the branch is not specified in the SRC_URI, the do_fetch task may
fail even though the SHA1 revision exists in the repository.
Signed-off-by: Javier Viguera <javier.viguera@digi.com>