Fix SDcard size and format issue (#5004)

* - fix overflow in SDcard size computation
- fix format function
- implement more informative format error handling

* Move to a function

radio/src/gui/480x272/radio_sdmanager.cpp

@@ -151,14 +151,10 @@ bool menuRadioSdManager(event_t _event)
     showMessageBox(STR_FORMATTING);
     logsClose();
     audioQueue.stopSD();
-    BYTE work[_MAX_SS];
-    if (f_mkfs(0, FM_FAT32, 0, work, sizeof(work)) == FR_OK) {
+    if(sdCardFormat()) {
       f_chdir("/");
       REFRESH_FILES();
     }
-    else {
-      POPUP_WARNING(STR_SDCARD_ERROR);
-    }
   }
 
   event_t event = (EVT_KEY_MASK(_event) == KEY_ENTER ? 0 : _event);