various: sync package_ipk

Commit 605c37cb989a95c02633fcb93efb45102781b4bb switched the tree to use
'package_ipk' instead of 'package_rpm'.  Since then a few other systems
have gone in which used an old package setting.  Sync them to use IPK.

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: Iecd2f65871038d6139c87f910c7c7fb19a115067
diff --git a/meta-inventec/meta-transformers/conf/local.conf.sample b/meta-inventec/meta-transformers/conf/local.conf.sample
index f3ac2e2..45a7e25 100755
--- a/meta-inventec/meta-transformers/conf/local.conf.sample
+++ b/meta-inventec/meta-transformers/conf/local.conf.sample
@@ -84,7 +84,7 @@
 #  - 'package_rpm' for rpm style packages
 # E.g.: PACKAGE_CLASSES ?= "package_rpm package_deb package_ipk"
 # We default to rpm:
-PACKAGE_CLASSES ?= "package_rpm"
+PACKAGE_CLASSES ?= "package_ipk"
 
 #
 # SDK target architecture