[coreboot] Patch merged into coreboot/master: 2cae4a4 crossgcc: Test for m4 and bison

the following patch was just integrated into master:
commit 2cae4a41616ca7a7aba6c6db680d94c7bbbd5476
Author: Patrick Georgi 
Date:   Sat May 12 23:25:23 2012 +0200

crossgcc: Test for m4 and bison

Happened way too often that crossgcc failed
    because m4 or bison wasn't installed already.

Change-Id: Ibcca2183edd5db20608015e3898f8fff9a6d11e8
    Signed-off-by: Patrick Georgi

See http://review.coreboot.org/1026 for details.

-gerrit