set config_enabled_lte to true by default

AOSP by default set this flag off, thus on AOSP/GSI build, device can't
set preferred NW to 4G. We should trun this on by default. If OEMs dont
want 4G options, they can explicitly disable it in resource overlay

Bug: 117133176
Test: telephony unit test
Change-Id: I109631e422b712fa16e8ad40f467439adaaafc08
1 file changed