cc/gcc: update Linaro GCC revisions to 2012.09

Update Linaro GCC with the latest available revisions.

Signed-off-by: "Benoît Thébaudeau" <benoit.thebaudeau@advansee.com>
Message-Id: <cd97309e8b617d7d729e.1348236736@advdt005-ubuntu>
PatchWork-ID: 185741

# Compute s390-specific values

CT_DoArchTupleValues() {

    # That's the only thing to override

    if [ "${CT_ARCH_64}" = "y" ]; then

        CT_TARGET_ARCH="s390x"

    fi

}