[automerger skipped] Split make room for outgoing call into a separate method...

[automerger skipped] Split make room for outgoing call into a separate method for emergency am: 2725fb83 am: 4be918ee -s ours

am skip reason: Change-Id Ieb558894ff8ca5b36003a45abfd2bb9542ea21e0 with SHA-1 0dbcaca6 is in history

Original change: https://android-review.googlesource.com/c/platform/packages/services/Telecomm/+/1322994

Change-Id: I289d2fa7fb20ae43e7bf39bba972c3b1f47dcf10