tree aad28d04544298fe924431768c932264a87adc5f
parent fd5b413829e0b5dce09a0a4bcadf6a27c0b63284
author bohu <bohu@google.com> 1527196828 -0700
committer bohu <bohu@google.com> 1529682069 -0700

Telephony: simplify apns-conf.xml loading logic

Previously, the timestamps of system/etc/apns-conf.xml,
oem/telephony/apns-conf.xml and data/misc/apns/apns-conf.xml
are compared and the newerest one is picked.
However, in release build, all of them will have the
same time stamps, and the system/etc/apns-conf.xml will
always be picked.

This cl will just pick the apns-conf.xml in the following
priority:
data/misc/apns/apns-conf.xml if exists,
oem/telephony/apns-conf.xml if exists
and system/etc/apns-conf.xml (this should always exist)

The impact of this cl is very small as most sane configuration
will have valid system/etc/apns-conf.xml.

BUG: 79584197
Change-Id: Icafa0195cae283910734851cad90a8add4aeeb74