[Bugfix] esp32 linker error when central and peripheral roles disabled

Author: h2zero

src/syscfg/syscfg.h

@@ -1970,7 +1970,7 @@
 
 #ifndef MYNEWT_VAL_BLE_HOST_BASED_PRIVACY
 #ifdef CONFIG_IDF_TARGET_ESP32
-#define MYNEWT_VAL_BLE_HOST_BASED_PRIVACY (1)
+#define MYNEWT_VAL_BLE_HOST_BASED_PRIVACY (MYNEWT_VAL_BLE_ROLE_CENTRAL || MYNEWT_VAL_BLE_ROLE_PERIPHERAL)
 #else
 #define MYNEWT_VAL_BLE_HOST_BASED_PRIVACY (0)
 #endif