Update git submodules

* Update platform/system/bt from branch 'master'
  to fd7b7ffd29e3e8ecd9a8d6b165e0802e1a551075
  - Merge "Controller: Debug message for unuspported opcodes"
  - Controller: Debug message for unuspported opcodes
    
    Bug: 181159438
    Test: cert/run
    Tag: #gd-refactor
    Change-Id: Iebee00b614da04cac77f9b2a8c104f16c97a8252
    
diff --git a/platform/system/bt b/platform/system/bt
index a7b42b7..fd7b7ff 160000
--- a/platform/system/bt
+++ b/platform/system/bt
@@ -1 +1 @@
-Subproject commit a7b42b70906cb76f10865ff7adc295a2823fb2cf
+Subproject commit fd7b7ffd29e3e8ecd9a8d6b165e0802e1a551075