clang-format: update latest spec and reformat

Copy the latest format file from the docs repository and apply.

Change-Id: I4a9d4410fcf7c9e87481d7d962fbcc92d071c913
Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
diff --git a/bmc/item_updater.cpp b/bmc/item_updater.cpp
index 351fc4c..2e889fb 100644
--- a/bmc/item_updater.cpp
+++ b/bmc/item_updater.cpp
@@ -570,8 +570,8 @@
     helper.cleanup();
 }
 
-ItemUpdater::ActivationStatus
-    ItemUpdater::validateSquashFSImage(const std::string& filePath)
+ItemUpdater::ActivationStatus ItemUpdater::validateSquashFSImage(
+    const std::string& filePath)
 {
     bool valid = true;