cpu/nrf5x_common: fix uart_poweroff() #21294

	name: static-tests

	on:
	push:
	branches:
	- master
	- staging
	- trying
	tags:
	- '[0-9][0-9][0-9][0-9].[0-9][0-9]-RC[0-9]*'
	- '[0-9][0-9][0-9][0-9].[0-9][0-9]'
	- '[0-9][0-9][0-9][0-9].[0-9][0-9].*'
	pull_request:
	branches:
	- '*'

	jobs:
	static-tests:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@main
	with:
	fetch-depth: 0
	- name: Setup git
	run: \|
	# Note: ${{ github.base_ref }} is empty when not in a PR
	if [ -n "${{ github.base_ref }}" ]; then
	git fetch origin ${{ github.base_ref }}:${{ github.base_ref }} --no-tags
	else
	git config diff.renameLimit 16384
	fi
	git config apply.whitespace nowarn
	- name: Fetch riot/static-test-tools Docker image
	run: docker pull riot/static-test-tools:latest
	- name: Run static-tests
	run: \|
	# Note: ${{ github.base_ref }} is empty when not in a PR
	docker run --rm \
	-e CI_BASE_BRANCH=${{ github.base_ref }} \
	-e GITHUB_RUN_ID=${GITHUB_RUN_ID} \
	-v $(pwd):/data/riotbuild \
	riot/static-test-tools:latest \
	make static-test

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