Camera: add external camera service

Change-Id: I37695d6c952b313e641dd145aa1af1d02e9cc537

vendor/file_contexts

@@ -7,6 +7,7 @@
 /(vendor|system/vendor)/bin/hw/android\.hardware\.boot@1\.0-service           u:object_r:hal_bootctl_default_exec:s0
 /(vendor|system/vendor)/bin/hw/android\.hardware\.broadcastradio@\d+\.\d+-service u:object_r:hal_broadcastradio_default_exec:s0
 /(vendor|system/vendor)/bin/hw/android\.hardware\.camera\.provider@2\.4-service          u:object_r:hal_camera_default_exec:s0
+/(vendor|system/vendor)/bin/hw/android\.hardware\.camera\.provider@2\.4-external-service          u:object_r:hal_camera_default_exec:s0
 /(vendor|system/vendor)/bin/hw/android\.hardware\.configstore@1\.[0-9]+-service    u:object_r:hal_configstore_default_exec:s0
 /(vendor|system/vendor)/bin/hw/android\.hardware\.contexthub@1\.0-service     u:object_r:hal_contexthub_default_exec:s0
 /(vendor|system/vendor)/bin/hw/android\.hardware\.drm@1\.0-service            u:object_r:hal_drm_default_exec:s0