Updates hydra: 78fd7ea Adds hydractl usb-toggle

diff --git a/hydra b/hydra
index 75836290121cae996621d68c8445ef575aa53490..78fd7ea812a869dbf95d31db0dcaa0732348e840 160000 (submodule)
--- a/hydra
+++ b/hydra
@@ -1 +1 @@
-Subproject commit 75836290121cae996621d68c8445ef575aa53490
+Subproject commit 78fd7ea812a869dbf95d31db0dcaa0732348e840