clang-format: Fix goto labels indentation

Thanks to IndentGotoLabels introduced with clang-format-10 [1], we can
avoid goto labels identation.  This follows the current coding style and
it is then in line with the checkpatch.pl rules [2].

Link: https://clang.llvm.org/docs/ClangFormatStyleOptions.html [1]
Link: https://lore.kernel.org/r/8b6b252b-47a6-9d52-f0bd-10d3bc4ad244@digikod.net [2]
Cc: Miguel Ojeda <ojeda@kernel.org>
Cc: Tom Rix <trix@redhat.com>
Signed-off-by: Mickaël Salaün <mic@digikod.net>
Link: https://lore.kernel.org/r/20220506160106.522341-4-mic@digikod.net
[Updated header comment to >= 10]
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>

.clang-format

 # SPDX-License-Identifier: GPL-2.0
 #
-# clang-format configuration file. Intended for clang-format >= 6.
+# clang-format configuration file. Intended for clang-format >= 10.
 #
 # For more information, see:
 #
@@ -633,6 +633,7 @@ IncludeCategories:
     Priority: 1
 IncludeIsMainRegex: '(Test)?$'
 IndentCaseLabels: false
+IndentGotoLabels: false
 IndentPPDirectives: None
 IndentWidth: 8
 IndentWrappedFunctionNames: false