Ues permission to protect DeepLinkHomepageActivity

DeepLinkHomepageActivity needs the permission
android.permission.LAUNCH_TWO_PANE_SETTINGS_DEEP_LINK
to limit the apps that can show Activity in Settings 2-pane.

The permission is of protectionLevel signature|preinstalled.
System grants the permission automatically to all the
preinstalled apps and the apps that signed with platform key.

Bug: 197048599
Test: build pass
Change-Id: I1c2de3c9cddae432c5ff6e5d6ad56959b8117f8b