pinctrl: bcm2835: follow sub-system upgrade
JIRA: https://issues.redhat.com/browse/RHEL-28621
Backport upstream fixes that did not come with the sub-system upgrade. This
should fix the pipelines for the automotive branch and attend remaining
warnings in the bcm2835 code path.
Signed-off-by: Eric Chanudet echanude@redhat.com