Added option to take a 'bugreporttelephony'.

This option takes a lightweight version of bugreport that only includes a few,
urgent sections used to report telephony bugs.

BUG: 32589463
BUG: 26849505

Test: dumpstate_test passes
Test: manual verification
Change-Id: I9b7369323a62e30e5d740eeb22db0045262387ba