mklive: fix inclusion of some dkms modules

dkms makes `/var/lib/dkms` during xbps's package configuration, so if
a dkms module comes *before dkms alphabetically*, it fails `dkms add`
with `Error! No write access to DKMS tree at /var/lib/dkms` (which is
silenced by the xbps trigger)... because `/var/lib/dkms` doesn't exist
yet.

fixes: #358

mklive.sh

@@ -140,6 +140,11 @@ install_packages() {
     if [ -f "$ROOTFS"/etc/default/libc-locales ]; then
         sed -e "s/\#\(${LOCALE}.*\)/\1/g" -i "$ROOTFS"/etc/default/libc-locales
     fi
+    if xbps-query -r "$ROOTFS" dkms >/dev/null 2>&1; then
+        # dkms modules alphabetically before dkms can't configure
+        # if dkms hasn't configured beforehand to create /var/lib/dkms
+        chroot "$ROOTFS" env -i xbps-reconfigure dkms
+    fi
     chroot "$ROOTFS" env -i xbps-reconfigure -a
 
     # Cleanup and remove useless stuff.