clang-tidy: disable readability-named-parameter

'readability-named-parameter' is from the Google C++ coding standards
and is not enforced in OpenBMC, so disable it.  Also update the
HeaderFilterRegex to match the value from the docs repository reference.

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I186b0c758fde0cc434623567d15f4f730ce57b95
diff --git a/.clang-tidy b/.clang-tidy
index 891d117..26769de 100644
--- a/.clang-tidy
+++ b/.clang-tidy
@@ -266,7 +266,6 @@
 readability-make-member-function-const,
 readability-misleading-indentation,
 readability-misplaced-array-index,
-readability-named-parameter,
 readability-non-const-parameter,
 readability-qualified-auto,
 readability-redundant-access-specifiers,
@@ -286,4 +285,4 @@
 readability-uppercase-literal-suffix'
 
 WarningsAsErrors: '*'
-HeaderFilterRegex: '.*.hpp'
+HeaderFilterRegex: '(?!^subprojects).*'