add settings to enable readonly fs

recipes-core/init-ifupdown/init-ifupdown_%.bbappend

@@ -2,6 +2,8 @@ FILESEXTRAPATHS:prepend := "${THISDIR}/files:"
 SRC_URI += "file://itf_diya"
 
 do_install:append () {
+    install -d ${D}/var/etc
+    install -d ${D}/var/etc/network
     rm ${D}/etc/network/interfaces
     install -m 0644 ${WORKDIR}/itf_diya ${D}/var/etc/network/
 }

recipes-diya/diya-overlay/files/80_diya

@@ -1,4 +1,3 @@
-d root root 0755 /var/etc/network none
 d root root 0755 /var/etc/dropbear none
 l root root 0644 /etc/network/interfaces /var/etc/network/itf_diya
 l root root 0644 /etc/dropbear /var/etc/dropbear