ci: Update .clang-format from apache-mynewt-core

Author: Mynewt Bot

.clang-format

@@ -23,7 +23,7 @@ BraceWrapping:
   BeforeCatch: false
   BeforeElse: false
   IndentBraces: false
-  SplitEmptyFunction: true
+  SplitEmptyFunction: false
   SplitEmptyRecord: false
   SplitEmptyNamespace: false