This reverts commit 206a0fc75d5f54886c1b3f3a65782a75e36b6b97.
The linux-headers directory is for kernel headers which we keep in
sync with the upstream kernel via scripts/update-linux-headers.sh, so
we shouldn't be applying our code cleanups to it.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
b07d1c2f56