ext/hal: stm32wb: Configure M0 FW in LL only

In order to enable HCI mode in M0 firmware,
enable CFG_BLE_LL_ONLY in hci lib.

Signed-off-by: Erwan Gouriou <[email protected]>

Author: erwango

ext/hal/st/lib/stm32wb/hci/app_conf.h

@@ -161,7 +161,7 @@
  *  1 : LL Only
  *  0 : LL + Host
  */
-#define CFG_BLE_LL_ONLY  0
+#define CFG_BLE_LL_ONLY  1
 /******************************************************************************
  * Transport Layer
  ******************************************************************************/