meta-ibm: palmetto: fix up bbappend wildcards

A number of bbappend wildcards matched more than what was desired.
Reduce the scope accordingly.

Change-Id: Ibc4bea417e0c59e5d4533a755140f3ac1a6ab8b3
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
5 files changed