Bluetooth: update BCM20702 firmware location

Linux 3.16 expects BCM20702 firmware to be at:
/lib/firmware/brcm/BCM20702A0-0a5c-22be.hcd

Change-Id: I2dff8acd8d368d6499c2e6c56fbabf2ca11ca2d1
diff --git a/package/bcm_bluetooth/bcm_bluetooth.mk b/package/bcm_bluetooth/bcm_bluetooth.mk
index ce30c62..1e57a70 100644
--- a/package/bcm_bluetooth/bcm_bluetooth.mk
+++ b/package/bcm_bluetooth/bcm_bluetooth.mk
@@ -51,6 +51,7 @@
 ifeq ($(BR2_PACKAGE_BCM_BLUETOOTH_FW),y)
 define BCM_BLUETOOTH_FW_INSTALL_TARGET
 	$(INSTALL) -D -m 0400 $(@D)/fw/BCM20702.hcd $(TARGET_DIR)/lib/firmware/brcm/BCM20702.hcd
+	ln -sf BCM20702.hcd $(TARGET_DIR)/lib/firmware/brcm/BCM20702A0-0a5c-22be.hcd
 	$(INSTALL) -D -m 0400 $(@D)/fw/BCM20705.hcd $(TARGET_DIR)/lib/firmware/brcm/BCM20705.hcd
 endef
 else