px4_manifest: add function declaration for get base EEPROM mtd

platforms/common/include/px4_platform_common/px4_manifest.h

@@ -88,6 +88,19 @@ __BEGIN_DECLS
 
 __EXPORT const px4_mft_s *board_get_manifest(void);
 
+/************************************************************************************
+ * Name: board_get_base_eeprom_mtd_manifest
+ *
+ * Description:
+ *   A board will provide this function to return the mtd with eeprom manifest
+ *
+ * Returned Value:
+ *   pointer to mtd manifest
+ *
+ ************************************************************************************/
+
+__EXPORT const px4_mtd_manifest_t *board_get_base_eeprom_mtd_manifest(void);
+
 /************************************************************************************
  * Name: px4_mft_configure
  *