vendorcode: Use cross archiver for libagesa.a on AMD f14

Change-Id: I61a9f65a1ac4c95096d0ff071a95984cf219caa8
Signed-off-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-on: http://review.coreboot.org/10593
Reviewed-by: Marc Jones <marc.jones@se-eng.com>
Tested-by: build bot (Jenkins)
1 file changed