Replace mdev with udev in init script and don't mount /proc twice.

package/busybox/inittab

@@ -14,7 +14,7 @@
 # process   == program to run
 
 # Startup the system
-::sysinit:/bin/mount -t proc proc /proc
+# ::sysinit:/bin/mount -t proc proc /proc
 ::sysinit:/bin/mount -o remount,rw /
 ::sysinit:/bin/mkdir -p /dev/pts /dev/shm
 ::sysinit:/bin/mount -a

package/sysvinit/inittab

@@ -4,7 +4,7 @@
 # Buildroot's default inittab for BusyBox.
 id:3:initdefault:
 
-si0::sysinit:/bin/mount -t proc proc /proc
+# si0::sysinit:/bin/mount -t proc proc /proc
 si1::sysinit:/bin/mount -o remount,rw /
 si2::sysinit:/bin/mkdir -p /dev/pts /dev/shm
 si3::sysinit:/bin/mount -a

system/skeleton/init

@@ -24,7 +24,7 @@ fi
 
 mount -t sysfs sysfs /sys
 
-mdev -s
+mount -t devtmpfs -o nosuid,mode=0755 devtmpfs /dev
 
 mkdir -p /dev/pts
 mkdir -p /dev/shm
@@ -53,6 +53,7 @@ mount -n -o move /proc /rootfs/proc
 mount -n -o move /sys /rootfs/sys
 mount -n -o move /run /rootfs/run
 mount -n -o move /tmp /rootfs/tmp
+mount -n -o move /dev /rootfs/dev
 mount -n -o move /dev/shm /rootfs/dev/shm
 mount -n -o move /dev/pts /rootfs/dev/pts