Stefan Fiedler:

package/daja77/kqemu/kqemu.conf

@@ -21,3 +21,4 @@
 # --- ROCK-COPYRIGHT-NOTE-END ---
 
 hook_add preconf 4 "sed -i -e 's,\(/sbin/depmod\),echo \1,' install.sh"
+hook_add postmake 5 "cp -a $confdir/kqemu.rules $root/etc/udev/rules.d/"

package/daja77/kqemu/kqemu.rules

@@ -0,0 +1,3 @@
+# kqemu does not create the appropriate device file itself.
+ACTION=="add",		ENV{MODALIAS}=="kqemu",	RUN+="/bin/mknod /dev/kqemu c 250 3"
+ACTION=="remove",	ENV{MODALIAS}=="kqemu",	RUN+="/bin/rm -f /dev/kqemu"