Add missing arm64 registers.

Also fix dumping of arm64's vector registers, which are actually 128 bits wide.

Also move the arm/arm64 FP registers to the tombstone. (We've never dumped
them at all for the other architectures.)

Change-Id: I239a86dd225b47fa90109bc824b7610df67ad812
diff --git a/debuggerd/arm/machine.cpp b/debuggerd/arm/machine.cpp
index 8270066..50e78c5 100644
--- a/debuggerd/arm/machine.cpp
+++ b/debuggerd/arm/machine.cpp
@@ -82,13 +82,13 @@
 
   user_vfp vfp_regs;
   if (ptrace(PTRACE_GETVFPREGS, tid, 0, &vfp_regs)) {
-    _LOG(log, logtype::REGISTERS, "cannot get registers: %s\n", strerror(errno));
+    _LOG(log, logtype::FP_REGISTERS, "cannot get FP registers: %s\n", strerror(errno));
     return;
   }
 
   for (size_t i = 0; i < 32; i += 2) {
-    _LOG(log, logtype::REGISTERS, "    d%-2d %016llx  d%-2d %016llx\n",
+    _LOG(log, logtype::FP_REGISTERS, "    d%-2d %016llx  d%-2d %016llx\n",
          i, vfp_regs.fpregs[i], i+1, vfp_regs.fpregs[i+1]);
   }
-  _LOG(log, logtype::REGISTERS, "    scr %08lx\n", vfp_regs.fpscr);
+  _LOG(log, logtype::FP_REGISTERS, "    scr %08lx\n", vfp_regs.fpscr);
 }