Add Inter-Signal Bias fields

Bug: 147500886

Test: on cuttlefish
Change-Id: Id50d1f6a60e758e8c02b7a1c4bbdfd73f62ffeb7
diff --git a/gnss/2.1/Android.bp b/gnss/2.1/Android.bp
index 8b0c374..c615f1d 100644
--- a/gnss/2.1/Android.bp
+++ b/gnss/2.1/Android.bp
@@ -7,6 +7,7 @@
         enabled: true,
     },
     srcs: [
+        "types.hal",
         "IGnss.hal",
         "IGnssCallback.hal",
         "IGnssMeasurement.hal",