[Telephony Debug Menu] LTE BW and Serving CellInfo

Add debug menu support for the serving cell status
indication and the LTE bandwidth in the CellInfo
display.

Bug: 78791811
Test: manual
Merged-In: Ic51858131af671317431e0970bdcaeebcb460931
Change-Id: Ic51858131af671317431e0970bdcaeebcb460931
(cherry picked from commit 6e16fdf3)