meta-digi-del: add override 'mdev' bootscript

https://jira.digi.com/browse/DEL-159 #resolve

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

meta-digi-del/recipes-core/busybox/busybox-1.20.2/mdev

@@ -0,0 +1,51 @@
+#!/bin/sh
+#===============================================================================
+#
+#  mdev
+#
+#  Copyright (C) 2013 by Digi International Inc.
+#  All rights reserved.
+#
+#  This program is free software; you can redistribute it and/or modify it
+#  under the terms of the GNU General Public License version 2 as published by
+#  the Free Software Foundation.
+#
+#  Description: Device nodes bootscript
+#
+#===============================================================================
+
+set -e
+
+if [ "${1}" != "start" ]; then
+	exit 0
+fi
+
+MDEV="/sbin/mdev"
+# MAKEDEVS="/sbin/makedevs"
+# CONFIG="/etc/makedevs.d/${DEL_PLATFORM}"
+
+# Register mdev as hotplug to create devices.
+if [ -f /proc/sys/kernel/hotplug ]; then
+	echo > /dev/mdev.seq
+	echo "${MDEV}" > /proc/sys/kernel/hotplug
+fi
+
+# Create all device nodes scanning /sys.
+${MDEV} -s
+
+# Create rest device nodes via configuration file.
+# if [ -f "${CONFIG}" ]; then
+# 	[ -z "${quietboot}" ] && echo -n "Creating nodes via configuration file... "
+# 	${MAKEDEVS} -d "${CONFIG}" / >/dev/null 2>&1
+# 	[ -z "${quietboot}" ] && echo "done"
+# fi
+
+# mount storage devices
+usbmount
+mmc-mount
+
+# fire *add* event for ADC so the nodes are created in case of built-in driver
+for i in $(echo /sys/bus/platform/drivers/*adc*/uevent); do
+	[ "${i}" = "/sys/bus/platform/drivers/*adc*/uevent" ] && continue
+	echo add > $i
+done

meta-digi-del/recipes-core/busybox/busybox_1.20.2.bbappend

@@ -6,8 +6,6 @@ DEPENDS += "libdigi"
 SRC_URI += "file://0001-del-baudrates.patch \
             file://0002-del-mdev_regulatory.patch \
             file://0003-del-flash_eraseall.patch \
-            file://defconfig \
-            file://mdev.conf \
             file://adc \
             file://mmc \
             file://sd \