toolchain-external: CodeSourcery NIOSII update upstream URL
The current URL returns error 403: Forbidden, so switch to https.
Signed-off-by: Romain Naour <romain.naour@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
(cherry picked from commit d647b23e2e0127fc98012f15a57fceb873500bad)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>