Fix parsing hexdump output

hexdump output on i586 contained odd symbol '|' in the line where the word 'Modules' began,
it broke previously used awk command.

kernel.spec

@@ -1030,7 +1030,7 @@ mkdir -p "%{certs_dir_rnd}"
 echo 0 > %{certs_verify_tmp}
 _verify_signature(){
 	if [ -z "$1" ] || [ ! -f "$1" ]; then return; fi
-	if hexdump -C "$1" | awk -F '|' '{print $2}' | tr -d '\n' | \
+	if hexdump -C "$1" | rev | cut -f 2 -d '|' | rev | tr -d '\n' | \
 	   grep -q '~Module signature appended~'
 		then
 			echo $(($(cat %{certs_verify_tmp})+1)) > %{certs_verify_tmp}