bttester/syscfg.yml: add GAP services
Changes in config add "Appearance" characteristic and make "Device Name"
characteristic writable, which allows to execute tests GAP/GAT/BV-05-C
and GAP/GAT/BV-06-C.
diff --git a/apps/bttester/syscfg.yml b/apps/bttester/syscfg.yml
index 8aeac10..82000fb 100644
--- a/apps/bttester/syscfg.yml
+++ b/apps/bttester/syscfg.yml
@@ -104,6 +104,8 @@
     BLE_SVC_GAP_PPCP_MIN_CONN_INTERVAL: 9
     BLE_SVC_GAP_PPCP_MAX_CONN_INTERVAL: 30
     BLE_SVC_GAP_PPCP_SUPERVISION_TMO: 2000
+    BLE_SVC_GAP_APPEARANCE_WRITE_PERM: 0
+    BLE_SVC_GAP_DEVICE_NAME_WRITE_PERM: 0
     BLE_STORE_CONFIG_PERSIST: 0
 
     BLE_MESH: 1