Dump VFP registers and status word when native app crashes.

Bug: 2226399
Caveat: d0/d1 appear to be clobbered by ptrace. It will be tracked by a new bug.
diff --git a/debuggerd/vfp-crasher.c b/debuggerd/vfp-crasher.c
new file mode 100644
index 0000000..7a19cdd
--- /dev/null
+++ b/debuggerd/vfp-crasher.c
@@ -0,0 +1,7 @@
+int main()
+{
+  extern void crash(void);
+
+  crash();
+  return 0;
+}