Refine EEPROM types / flags (#17772)

Marlin/src/HAL/LPC1768/eeprom_sdcard.cpp

@@ -38,6 +38,8 @@ FATFS fat_fs;
 FIL eeprom_file;
 bool eeprom_file_open = false;
 
+size_t PersistentStore::capacity() { return 4096; } // 4KiB of Emulated EEPROM
+
 bool PersistentStore::access_start() {
   const char eeprom_erase_value = 0xFF;
   MSC_Aquire_Lock();
@@ -168,7 +170,5 @@ bool PersistentStore::read_data(int &pos, uint8_t* value, const size_t size, uin
   return bytes_read != size;  // return true for any error
 }
 
-size_t PersistentStore::capacity() { return 4096; } // 4KiB of Emulated EEPROM
-
 #endif // SDCARD_EEPROM_EMULATION
 #endif // TARGET_LPC1768