Cellbroadcast util lib

Bug: 135956699
Test: Build
Change-Id: I247bfb3d877334fe822332275e37f015e10a566e
(cherry picked from commit 4fea79cc583a16804f4d596daa61fe7025d4f5e5)
Merged-in: I247bfb3d877334fe822332275e37f015e10a566e
1 file changed