Replace legacy trusty gatekeeper HAL with HIDLized version

This patch replaces the legacy libhardware based gatekeeper HAL with a
true HIDL based implementation.

Test: Workes with trusty gatekeeper
Change-Id: I072b0c3fc74523400132aacd34e2f2cac9cf261b
Merged-In: I072b0c3fc74523400132aacd34e2f2cac9cf261b
diff --git a/trusty/gatekeeper/android.hardware.gatekeeper@1.0-service.trusty.xml b/trusty/gatekeeper/android.hardware.gatekeeper@1.0-service.trusty.xml
new file mode 100644
index 0000000..19714a8
--- /dev/null
+++ b/trusty/gatekeeper/android.hardware.gatekeeper@1.0-service.trusty.xml
@@ -0,0 +1,11 @@
+<manifest version="1.0" type="device">
+    <hal format="hidl">
+        <name>android.hardware.gatekeeper</name>
+        <transport>hwbinder</transport>
+        <version>1.0</version>
+        <interface>
+        <name>IGatekeeper</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+</manifest>