clang-format: copy latest and re-format

clang-format-16 has some backwards incompatible changes that require
additional settings for best compatibility and re-running the formatter.
Copy the latest

clang-format: copy latest and re-format

clang-format-16 has some backwards incompatible changes that require
additional settings for best compatibility and re-running the formatter.
Copy the latest .clang-format from the docs repository and reformat the
repository.

Change-Id: I267a17e007b99caed10aef060e7dd9a0bcc5fc2e
Signed-off-by: Patrick Williams <patrick@stwcx.xyz>

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test: add gpiohandle mock impl

Add gpio handle mock implementation for use in testing.

Change-Id: I0fb2d1af4739ad700f62a4e7cbbe62db528bb93e
Signed-off-by: Patrick Venture <venture@google.com>