kbuild: scripts/ver_linux : correct printing of binutils version

Currently scripts/ver_linux prints "Binutils" or other random
information for the version number in the "binutils" output line
on some distributions. This patch corrects that.

When I initially submitted a patch to correct that, I was not aware
that the output from "ld -v" could differ as much as it turned out
it can, so my original fix turned out to not cover all bases.
This patch works correctly with all the different "ld -v" output
that people posted in replys to my first patch, so it should be a
clear win over what we have currently.
Signed-off-by: NJesper Juhl <jesper.juhl@gmail.com>
Signed-off-by: NSam Ravnborg <sam@ravnborg.org>

scripts/ver_linux

@@ -21,9 +21,7 @@ gcc --version 2>&1| grep gcc | awk \
 make --version 2>&1 | awk -F, '{print $1}' | awk \
       '/GNU Make/{print "Gnu make              ",$NF}'
 
-ld -v | awk -F\) '{print $1}' | awk \
-'/BFD/{print "binutils              ",$NF} \
-/^GNU/{print "binutils              ",$4}'
+echo "binutils               $(ld -v | egrep -o '[0-9]+\.[0-9\.]+')"
 
 echo -n "util-linux             "
 fdformat --version | awk '{print $NF}' | sed -e s/^util-linux-// -e s/\)$//