BLUETOOTH-SUSPEND: add bluetooth suspend as wifi suspend

Change-Id: I44123165c65308a1e076a1ac4a62b1fbd4c14f0a

recipes-connectivity/bluetooth/bluetooth-suspend/bluetooth-brcmfmac-sleep.service

@@ -0,0 +1,13 @@
+[Unit]
+Description=Bluetooth brcmfmac sleep hook
+Before=sleep.target
+StopWhenUnneeded=yes
+
+[Service]
+Type=oneshot
+RemainAfterExit=yes
+ExecStart=-/usr/bin/bluetooth_brcmfmac_driver.sh unbind
+ExecStop=-/usr/bin/bluetooth_brcmfmac_driver.sh bind
+
+[Install]
+WantedBy=sleep.target