Rename IKeymaster back to IKeymaserDevice

Test: VtsHalKeymasterV4_0TargetTest
Change-Id: Ic5e7f936ef75aa64834677f6589822fbedce39cd
diff --git a/keymaster/4.0/Android.bp b/keymaster/4.0/Android.bp
index 2d4e7bf..34997d2 100644
--- a/keymaster/4.0/Android.bp
+++ b/keymaster/4.0/Android.bp
@@ -8,7 +8,7 @@
     },
     srcs: [
         "types.hal",
-        "IKeymaster.hal",
+        "IKeymasterDevice.hal",
     ],
     interfaces: [
         "android.hardware.keymaster@3.0",