xcompile: x86-64-elf wants -Wa,--divide, too

Change-Id: I03eb1c0f1e0b0c6213ec6b26cf41dadd4df9b910
Signed-off-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-on: http://review.coreboot.org/10574
Tested-by: build bot (Jenkins)
Reviewed-by: Marc Jones <marc.jones@se-eng.com>
1 file changed