crossgcc: update to gcc 4.7.2

Update crossgcc to use gcc 4.7.2.
This requires a minor change to util/crossgcc/buildgcc as well.

Tested on hardware with asus/p2b and lenovo/x60.

Change-Id: Ia3921844670ca99741e5715def14dd969f305ab7
Signed-off-by: Idwer Vollering <vidwer@gmail.com>
Reviewed-on: http://review.coreboot.org/1609
Tested-by: build bot (Jenkins)
Reviewed-by: Peter Stuge <peter@stuge.se>
1 file changed