files: respect overlayfs owner from lower layer

Permission model of overlayfs uses permissions/ownership from the upper
layer after mounting. Fix up UID/GID of the upper layer, when lower
layer already uses something custom.

(From OE-Core rev: b19b734ec3c031ee594229e728ee077cd58b34a9)

Signed-off-by: Vyacheslav Yurkov <v.yurkov@precitec.de>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/files/overlayfs-create-dirs.sh

@@ -6,3 +6,6 @@ lowerdir=$1
 datamountpoint=$2
 mkdir -p ${datamountpoint}/upper${lowerdir}
 mkdir -p ${datamountpoint}/workdir${lowerdir}
+if [ -d "$lowerdir" ]; then
+    chown $(stat -c "%U:%G" ${lowerdir}) ${datamountpoint}/upper${lowerdir}
+fi