Support hiding roaming icon for display purposes am: 041adf1a

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/opt/telephony/+/24811079



Change-Id: Ia68d29739679b9efad66f79dc4bf8905faf7b341
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>