project:cfg:BoardConfig_IPC:overlay:Fix permission errors and naming issues in overlay files.

Signed-off-by: luckfox-eng29 <eng29@luckfox.com>

project/cfg/BoardConfig_IPC/luckfox-userdata-pre.sh

@@ -0,0 +1,24 @@
+#!/bin/bash
+
+function lf_rm() {
+    for file in "$@"; do
+        if [ -e "$file" ]; then
+            echo "Deleting: $file"
+            rm -rf "$file"  
+        #else
+            #echo "File not found: $file" 
+        fi
+    done
+}
+
+# remove unused files
+function remove_data()
+{
+    lf_rm $RK_PROJECT_PACKAGE_USERDATA_DIR/*.sh
+    lf_rm $RK_PROJECT_PACKAGE_USERDATA_DIR/*.bmp
+}
+
+#=========================
+# run
+#=========================
+remove_data