Override keylayouts on S9/Note9 to include assistant button, and hard press on home to wake up

Change-Id: I278e077fe63cacf39abc35fd4299b80a117ce837
diff --git a/files/samsung-gpio_keys.kl b/files/samsung-gpio_keys.kl
new file mode 100644
index 0000000..ad90c03
--- /dev/null
+++ b/files/samsung-gpio_keys.kl
@@ -0,0 +1,11 @@
+# Copyright (C) 2018 The LineageOS Project

+# SPDX-License-Identifier: Apache-2.0

+

+key 114   VOLUME_DOWN

+key 115   VOLUME_UP

+key 116   POWER

+key 703   ASSIST

+key 103   SYSTEM_NAVIGATION_UP

+key 105   SYSTEM_NAVIGATION_LEFT

+key 106   SYSTEM_NAVIGATION_RIGHT

+key 108   SYSTEM_NAVIGATION_DOWN