Fix strongbox Keymaser .rc service name collision.

This lets the strongbox service start at boot.
Previously this collided with the default KM4.0 service.

Test: manual - started emulator, checked lshal and dmesg init logs

Change-Id: I744da20bdbde534fb2fe3d77075770e56ac157ee
diff --git a/keymaster/strongbox/android.hardware.keymaster@4.0-strongbox-service.rc b/keymaster/strongbox/android.hardware.keymaster@4.0-strongbox-service.rc
index d205409..5a0fe6c 100644
--- a/keymaster/strongbox/android.hardware.keymaster@4.0-strongbox-service.rc
+++ b/keymaster/strongbox/android.hardware.keymaster@4.0-strongbox-service.rc
@@ -1,4 +1,4 @@
-service vendor.keymaster-4-0 /vendor/bin/hw/android.hardware.keymaster@4.0-strongbox-service
+service vendor.keymaster-4-0-strongbox /vendor/bin/hw/android.hardware.keymaster@4.0-strongbox-service
     class early_hal
     user system
     group system drmrpc