env: Added function to load and run scripts from ext4

include/configs/trizeps8mini.h

@@ -365,6 +365,13 @@
             "source ${loadaddr};" \
         "fi;\0" \
 \
+\
+    "run_script_from_ext4=" \
+        "echo Try to run ${script} from mmc partition ${current_partition}; " \
+        "if ext4load mmc ${current_partition} ${loadaddr} ${script}; then " \
+            "source ${loadaddr};" \
+        "fi;\0" \
+\
 \
     "search_and_run_bootscript=" \
         "for i in 1 2 3 4 5 6 7; do " \