px4_manifest: add function declaration for get base EEPROM mtd

mtd_manifest:Make it C callable

platforms/common/include/px4_platform_common/mtd_manifest.h

@@ -100,6 +100,6 @@ __EXPORT int px4_mtd_config(const px4_mtd_manifest_t *mft_mtd);
  *   0 (get !=null) item by type's value is returned at get;
  *
  ************************************************************************************/
-__EXPORT int px4_mtd_query(const char *type, const char *val, const char **get = nullptr);
+__EXPORT int px4_mtd_query(const char *type, const char *val, const char **get);
 
 __END_DECLS

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
  *

platforms/nuttx/src/px4/common/px4_manifest.cpp

@@ -100,7 +100,7 @@ __EXPORT int px4_mft_query(const px4_mft_s *mft, px4_manifest_types_e type,
 			if (mft->mfts[m]->type == type)
 				switch (type) {
 				case MTD:
-					return px4_mtd_query(sub, val);
+					return px4_mtd_query(sub, val, nullptr);
 					break;
 
 				case MFT: