regmap: Ensure range selector registers are updated after cache sync
MR !3372 (merged) added new regmap kunit test code which is for the missing upstream fix 0ec7731655de196bc1e4af99e495b38778109d22 (see JIRA). Apply this commit, too.
JIRA: https://issues.redhat.com/browse/RHEL-22735
Signed-off-by: Jaroslav Kysela jkysela@redhat.com