ppp: add pppd config file for cellular devices

Signed-off-by: Javier Viguera <javier.viguera@digi.com>

meta-digi-dey/recipes-connectivity/ppp/ppp-2.4.7/mm_cellular

@@ -0,0 +1,26 @@
+# Assumes that your IP address is allocated dynamically by the ISP.
+noipdefault
+
+# Try to get the name server addresses from the ISP.
+usepeerdns
+
+# Use this connection as the default route.
+defaultroute
+
+# Replace default route if already exists.
+replacedefaultroute
+
+# Makes pppd "dial again" when the connection is lost.
+persist
+
+# Do not ask the remote to authenticate.
+noauth
+
+# Detach 'pppd' from its controlling terminal
+updetach
+
+# Don't use the modem control lines
+local
+
+# Lock the device to ensure exclusive access
+lock

meta-digi-dey/recipes-connectivity/ppp/ppp_2.4.7.bbappend

@@ -0,0 +1,8 @@
+FILESEXTRAPATHS_prepend := "${THISDIR}/${PN}-${PV}:"
+
+SRC_URI += "file://mm_cellular"
+
+do_install_append () {
+        mkdir -p ${D}${sysconfdir}/ppp/peers
+        install -m 0755 ${WORKDIR}/mm_cellular ${D}${sysconfdir}/ppp/peers/mm_cellular
+}