support/testing: test_openssh: use a prebuilt toolchain
Switch from the Buildroot internal toolchain for armv5 to
the prebuilt Bootlin external toolchain.
The test doesn't require to build a toolchain, there was
no prebuilt glibc toolchain recent enough at the time this
test has been introduced.
Signed-off-by: Romain Naour <romain.naour@gmail.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
(cherry picked from commit 184d20404e8a5b95f2b2940f4d959d09be7ae2f0)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>