menu: remember path of FC option.

menu.cpp

@@ -293,6 +293,11 @@ static char Selected_F[16][1024] = {};
 static char Selected_S[8][1024] = {};
 static char Selected_tmp[1024] = {};
 
+void StoreIdx_F(int idx, char *path)
+{
+	strcpy(Selected_F[idx], path);
+}
+
 static char selPath[1024] = {};
 
 static int changeDir(char *dir)

menu.h

@@ -23,5 +23,6 @@ void open_joystick_setup();
 int menu_lightgun_cb(int idx, uint16_t type, uint16_t code, int value);
 
 int menu_allow_cfg_switch();
+void StoreIdx_F(int idx, char *path);
 
 #endif

user_io.cpp

@@ -624,7 +624,9 @@ static void parse_config()
 				sprintf(str, "%s.f%c", user_io_get_core_name(), p[2]);
 				if (FileLoadConfig(str, str, sizeof(str)) && str[0])
 				{
-					user_io_file_tx(str, p[2] - '0');
+					int idx = p[2] - '0';
+					StoreIdx_F(idx, str);
+					user_io_file_tx(str, idx);
 				}
 			}
 		}