Yocto 2.4

Move OpenBMC to Yocto 2.4(rocko)

Tested: Built and verified Witherspoon and Palmetto images
Change-Id: I12057b18610d6fb0e6903c60213690301e9b0c67
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/import-layers/yocto-poky/scripts/lib/wic/pluginbase.py b/import-layers/yocto-poky/scripts/lib/wic/pluginbase.py
index fb3d179..c009820 100644
--- a/import-layers/yocto-poky/scripts/lib/wic/pluginbase.py
+++ b/import-layers/yocto-poky/scripts/lib/wic/pluginbase.py
@@ -24,7 +24,7 @@
 from importlib.machinery import SourceFileLoader
 
 from wic import WicError
-from wic.utils.misc import get_bitbake_var
+from wic.misc import get_bitbake_var
 
 PLUGIN_TYPES = ["imager", "source"]
 
@@ -137,4 +137,3 @@
         'prepares' the partition to be incorporated into the image.
         """
         logger.debug("SourcePlugin: do_prepare_partition: part: %s", part)
-