change "frontend" to "interface" in config.txt

src/filesystem.c

@@ -854,9 +854,9 @@ int file_save_config(char *resolution_name, int scaling, int current_frontend) {
            frontend = current_frontend;
        }
        if (frontend != 0) {
-           sprintf((char*)(buffer + bytes_read), "#frontend_%X=%d\r\n", i, frontend);
+           sprintf((char*)(buffer + bytes_read), "#interface_%X=%d\r\n", i, frontend);
            bytes_read += strlen((char*) (buffer + bytes_read));
-           log_info("Save frontend_%X = %d", i, frontend);
+           log_info("Save interface_%X = %d", i, frontend);
        }
    }
 

src/osd.c

@@ -3483,12 +3483,12 @@ void osd_init() {
    if (cbytes) {
        char frontname[256];
        for (int i=0; i< 16; i++) {
-           sprintf(frontname, "#frontend_%X", i);
+           sprintf(frontname, "#interface_%X", i);
            prop = get_prop_no_space(config_buffer, frontname);
            if (!prop) {
                prop = "0";
            }
-           log_info("Read frontend_%X = %s", i, prop);
+           log_info("Read interface_%X = %s", i, prop);
            all_frontends[i] = atoi(prop);
        }
    }