Fix NVIDIA module version selection and add load diagnostics

iso/overlay-debug/etc/init.d/bee-nvidia

@@ -9,6 +9,15 @@ depend() {
 
 start() {
     ebegin "Loading NVIDIA modules"
+    kver="$(uname -r)"
+    einfo "kernel: ${kver}"
+    if [ -d "/lib/modules/${kver}/extra/nvidia" ]; then
+        einfo "module dir: /lib/modules/${kver}/extra/nvidia"
+        ls "/lib/modules/${kver}/extra/nvidia"/*.ko 2>/dev/null | sed 's/^/  /' || true
+    else
+        ewarn "module dir missing: /lib/modules/${kver}/extra/nvidia"
+    fi
+
     # Run depmod so kernel can locate our modules in /lib/modules/.../extra/
     depmod -a 2>/dev/null || true
 
@@ -17,6 +26,7 @@ start() {
             einfo "loaded: $mod"
         else
             ewarn "failed to load: $mod"
+            dmesg | tail -n 5 | sed 's/^/  dmesg: /' || true
         fi
     done
     eend 0