updated the build script to patch for new freebsd kernels

README.md

@@ -36,8 +36,10 @@ interface) is never disrupted.
   (`patches/patch-*.c` and `patches/patch-Makefile`). Safe to re-run.
 - `build.sh` — builds `if_bwn.ko` (`sys/modules/bwn`), `bhndb_pci.ko`
   (`sys/modules/bhnd/bhndb_pci`), and `bwn_v4_n.ko` (from `src/firmware/`);
-  installs them to `/boot/modules` and `/boot/kernel`; and appends
-  `bwn_v4_n_load="YES"` to `/boot/loader.conf` if missing (Fix 5).
+  installs them to `/boot/modules` and `/boot/kernel`; appends
+  `bwn_v4_n_load="YES"` to `/boot/loader.conf` if missing (Fix 5); and
+  regenerates `/boot/kernel/linker.hints` and `/boot/modules/linker.hints`
+  with `kldxref` so the loader finds the new modules (no manual step).
 
 ### Manual build (equivalent to build.sh)
 
@@ -58,6 +60,12 @@ install -m 444 src/firmware/bwn_v4_n.ko /boot/modules/
 
 # 4. loader.conf (Fix 5)
 echo 'bwn_v4_n_load="YES"' >> /boot/loader.conf
+
+# 5. Regenerate linker.hints so the loader indexes the new modules
+#    (else /boot/kernel/linker.hints stays empty -> 'linker.hints file
+#    truncated' warnings and modules fail to auto-load at boot).
+kldxref /boot/kernel
+kldxref /boot/modules
 ```
 
 ## Directory layout