make crossgcc: compile all required toolchains

The ARMv7 toolchain is now also needed for abuild (at least
if you want to be able to compile ARM images)

Change-Id: If1253203a2198f7dea632ba45540222ba3361932
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/2147
Tested-by: build bot (Jenkins)
Reviewed-by: Marc Jones <marcj303@gmail.com>
1 file changed