Revert "poky: subtree update:b23aa6b753..ad30a6d470"

This reverts commit af5e4ef732faedf66c6dc1756432e9de2ac72988.

This commit introduced openbmc/openbmc#3720 and no solution has been
forthcoming. Revert until we can get to the bottom of this.

Change-Id: I2fb0d81eb26cf3dadb2f2abdd1a1bb7a95eaf03c
diff --git a/poky/meta/classes/devtool-source.bbclass b/poky/meta/classes/devtool-source.bbclass
index 41900e6..280d600 100644
--- a/poky/meta/classes/devtool-source.bbclass
+++ b/poky/meta/classes/devtool-source.bbclass
@@ -199,7 +199,6 @@
             # Run do_patch function with the override applied
             localdata = bb.data.createCopy(d)
             localdata.setVar('OVERRIDES', ':'.join(no_overrides))
-            localdata.setVar('FILESOVERRIDES', ':'.join(no_overrides))
             bb.build.exec_func('do_patch', localdata)
             rm_patches()
             # Now we need to reconcile the dev branch with the no-overrides one
@@ -217,8 +216,7 @@
                 # Reset back to the initial commit on a new branch
                 bb.process.run('git checkout %s -b devtool-override-%s' % (initial_rev, override), cwd=srcsubdir)
                 # Run do_patch function with the override applied
-                localdata.setVar('OVERRIDES', ':'.join(no_overrides + [override]))
-                localdata.setVar('FILESOVERRIDES', ':'.join(no_overrides + [override]))
+                localdata.appendVar('OVERRIDES', ':%s' % override)
                 bb.build.exec_func('do_patch', localdata)
                 rm_patches()
                 # Now we need to reconcile the new branch with the no-overrides one