Disable camera on TVs

Making any camera available on a TVs (and TV-emus)
makes list from getCameraIdList non-empty which triggers
failures of 20+ CTS due to iterating through cameras and
verifying their functionality.

Disabling camera through a config only makes number of available cameras
equal to 0 but camera service is still availavle and all camera related features.

This is a minimal change in order to provide the passing behavior.
Disabling of camera service/features will be enqueued for fixup separately.

Bug: 142780688
Test: run cts --module CtsCameraTestCases (tv-emu: skipped/passed, mobile-emu: passed)

Change-Id: I525ce62485c165ef564e7115ca0a8ae67065741c
(cherry picked from commit 925154e714c472172595cdc30aeaee9abec1ba60)
diff --git a/data/etc/config.ini.tv b/data/etc/config.ini.tv
index 0aeb78b..be5f95e 100644
--- a/data/etc/config.ini.tv
+++ b/data/etc/config.ini.tv
@@ -4,7 +4,7 @@
 hw.accelerometer=no
 hw.audioInput=yes
 hw.battery=no
-hw.camera.back=emulated
+hw.camera.back=none
 hw.camera.front=none
 hw.dPad=no
 hw.gps=yes