Patch merged into coreboot/master: d268ab3 crossgcc: close stdin when search_tool() execute programs.

the following patch was just integrated into master:
commit d268ab32e3136534e8a1dd7e53eafd3583aea15a
Author: Alexander Couzens 
Date:   Mon Apr 13 17:15:12 2015 +0200

crossgcc: close stdin when search_tool() execute programs.

bzip2 --version |grep -c will wait for input on stdin. ./buildgcc will hang because of this.
    Add `cat /dev/null |` close the stdin.

Change-Id: I2a8b08a4d90ca7a89705923d5b68ba6ac13f29b3
    Signed-off-by: Alexander Couzens 
    Reviewed-on: http://review.coreboot.org/9605
    Tested-by: build bot (Jenkins)
    Reviewed-by: Patrick Georgi

See http://review.coreboot.org/9605 for details.

-gerrit