Add a couple of new hf_ entries to deal with the different bit positions

Add a couple of new hf_ entries to deal with the different bit positions
for the MS Power Level and FPC in the L1 Information and MS Power IEs.

This should fix https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=4017

(though I don't have a sample capture to verify the fix and that I didn't
break anything.)

git-svn-id: http://anonsvn.wireshark.org/wireshark/trunk@29944 f5534014-38df-0310-8fa8-9805f1628bb7