iwlwifi: script to extract firmware details

When having to find a firmware image with a lower version number
we must only break the inner but not also the outer loop so we
keep looking at any possibly remaining firmware details.

While here also try to find a version from max..1 and not from 1..max.

Sponsored by:	The FreeBSD Foundation
MFC after:	3 days

sys/contrib/dev/iwlwifi/zzz_fw_ports_fwget.sh

@@ -155,11 +155,11 @@ list_fw()
 					vn=$(echo ${fx} | awk '{ gsub(".ucode$", ""); gsub("^.*-", ""); print; }')
 					#echo "BN ${bn} VN ${vn}"
 					# Single digits are not zero-padded so just ${i} will be fine.
-					for i in `jot ${vn} 1`; do
+					for i in `jot ${vn} ${vn} 1`; do
 						xn="${bn}-${i}.ucode"
 						if test -e ${LFWDIR}/${xn}; then
 							lx="${lx} ${xn}"
-							break 2;
+							break
 						fi
 					done
 					;;