Make libdebuggerd ramdisk available.

Test: Builds and debuggerd unit tests pass.
Change-Id: I2a5bd96e349f81ae0bec8dbffc49646c1f58bfea
diff --git a/debuggerd/proto/Android.bp b/debuggerd/proto/Android.bp
index 73cf573..804f805 100644
--- a/debuggerd/proto/Android.bp
+++ b/debuggerd/proto/Android.bp
@@ -35,6 +35,7 @@
         "com.android.runtime",
     ],
 
+    ramdisk_available: true,
     recovery_available: true,
     vendor_ramdisk_available: true,
 }