clang-tidy: format with config-clang-tidy

Reformat the .clang-tidy file for consistency using the
config-clang-tidy tool from openbmc-build-scripts.

Change-Id: I90e028e21d3bae120e22b42560222592f82fa012
Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
diff --git a/.clang-tidy b/.clang-tidy
index 6153e73..c31ad57 100644
--- a/.clang-tidy
+++ b/.clang-tidy
@@ -1,14 +1,18 @@
-Checks: '
-    -*,
+Checks: '-*,
     bugprone-unchecked-optional-access,
     modernize-use-nullptr,
-    readability-function-size,
-    readability-function-cognitive-complexity
-'
+    readability-function-cognitive-complexity,
+    readability-function-size
+    '
+
 CheckOptions:
-  - { key: readability-function-size.LineThreshold,             value: 60 }
-  - { key: readability-function-size.ParameterThreshold,        value: 6 }
-  - { key: readability-function-cognitive-complexity.Threshold, value: 25 }
+-   key: readability-function-cognitive-complexity.Threshold
+    value: 25
+-   key: readability-function-size.LineThreshold
+    value: 60
+-   key: readability-function-size.ParameterThreshold
+    value: 6
+
+HeaderFilterRegex: (?!^subprojects).*
 
 WarningsAsErrors: '*'
-HeaderFilterRegex: '(?!^subprojects).*'