u-boot-boundary : Update SRC_URI for new fetcher behavior.

If SRC_REV is not in the master branch, the SRC_URI must specify the
branch.

Signed-off-by: Philip Balister <philip@balister.org>
u-boot-script-boundary : Update SRC_URI for new fetcher behavior.

If SRCREV is not in the master branch, the SRC_URI must specify the
branch.

Signed-off-by: Philip Balister <philip@balister.org>
linux-boundary : Update SRC_URI for new fetcher behavior.

If SRCREV is not in the master branch, the SRC_URI must specify the
branch.

Signed-off-by: Philip Balister <philip@balister.org>
linux-wandboard : Use SRCBRANCH instead of GITBRANCH.

Be consistent across all recipes.

Signed-off-by: Philip Balister <philip@balister.org>