These properties were previously persistent but have inadevertently lost
that during a refactor. It doesn't really matter what type it is since
init files forward this to (broken) non vendor-prefixed persist
properties anyway. Having only one pair persistent would be cleaner but
requires modifying more repos (device-sony-{common,sepolicy}) which we
rather do in one go when modem-switcher (blob) is updated to listen to a
vendor-prefixed property instead.
Fixes: e9db620081
Signed-off-by: Marijn Suijten <marijns95@gmail.com>