sdm845-common: Commonize BT stack and dependencies

There's no harm doing this and eases kernel 4.19 bringup.

Change-Id: Ie88f469be3f83c887dc2f993cb964bfa51091512

proprietary/vendor/etc/init/android.hardware.bluetooth@1.0-service-qti.rc

@@ -0,0 +1,5 @@
+service vendor.bluetooth-1-0-qti /vendor/bin/hw/android.hardware.bluetooth@1.0-service-qti
+    class hal
+    user bluetooth
+    group bluetooth system wakelock oem_2901
+    capabilities BLOCK_SUSPEND NET_ADMIN