power: Fix device label alignment

Should be left-aligned, previously it was centered
11 jobs for <span class="ref-name">power-device-label-align-3-30</span> in 4 minutes and 45 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Build
passed #151725
build

00:03:14

 
  Test
passed #151727
asan

00:01:30

passed #151726
test

00:00:38

 
  Manual
manual #151732
allowed to fail manual
armv8
manual #151728
allowed to fail manual
flatpak
manual #151731
allowed to fail manual
msan
manual #151733
allowed to fail manual
ppc64le
manual #151729
allowed to fail manual
tsan
manual #151730
allowed to fail manual
ubsan
 
  Review
manual #151734
allowed to fail manual
review
manual #151735
allowed to fail manual
stop_review