Compatible with npt syntax in SDP some servers send

Some servers provide npt syntax in SDP as "a=range:npt:0-11" but
AOSP only supports npt syntax "a=range:npt=0-11". If AOSP doesn't
support syntax ':', it will result in problem for some live streaming.

Bug: 123256414
Test: Play special file and check if duration is normal.
Change-Id: Ie1120adf13c0e92b2e954bb4cb8cc46866d90e4b
1 file changed