Increase at&t 5g icons by 50%

Despite pixel's design for RAT indicators being 10dp tall, make these
at&t 5g icons 15dp tall to match the height of other system icons. This
is an intentional divergence from the standard iconography for pixel and
AOSP thus far

Bug: 160841776
Test: manual
Change-Id: I6e34509c072eb4a5b7af77ec941567359f9ee511
(cherry picked from commit 93dc490cd05c6b23182de7207dd62a7fd0d5aaeb)
36 files changed