LE Maximum Advertising Data Length (3/4)

Add ability to check maximum advertising data length.

Bug: 30622771
Test: manual
Change-Id: I14a66a906a3f6133eea87c538de854bbfab056f5
diff --git a/include/hardware/bluetooth.h b/include/hardware/bluetooth.h
index a416043..5d69ab3 100644
--- a/include/hardware/bluetooth.h
+++ b/include/hardware/bluetooth.h
@@ -167,6 +167,7 @@
     bool le_coded_phy_supported;
     bool le_extended_advertising_supported;
     bool le_periodic_advertising_supported;
+    uint16_t le_maximum_advertising_data_length;
 }bt_local_le_features_t;
 
 /* Bluetooth Adapter and Remote Device property types */