[DS] Change a different way to get all subId

Bug 28667616

This is a cherry-pick from https://partner-android-review.googlesource.com/#/c/219847.
It wasn't a "clean" merge because the multi-sim apis changed quite a bit
since the original CL.

Change-Id: Ib4a446e8753784c1a34765a80feefd9aa828be76
1 file changed
tree: 98a684a73d081d90303b6c387ed4e8bdea29ee04
  1. src/
  2. tests/
  3. tools/
  4. Android.mk
  5. CleanSpec.mk
  6. README.txt