[lldb] [Process/FreeBSD] Fix arm64 build after RegisterInfoPOSIX_arm64 changes

[mgorny]

Summary

Commit 88a5b35d63f927db69ec953ff487a7ba2504a610 changed the API
of RegisterInfoPOSIX_arm64 and effectively broke the FreeBSD plugin.
Update it to work with the new API.

lldb/source/Plugins/Process/FreeBSD/NativeRegisterContextFreeBSD_arm64.cpp

 NativeRegisterContextFreeBSD::CreateHostNativeRegisterContextFreeBSD(
     const ArchSpec &target_arch, NativeThreadProtocol &native_thread) {
   return new NativeRegisterContextFreeBSD_arm64(target_arch, native_thread);
 }
 
 NativeRegisterContextFreeBSD_arm64::NativeRegisterContextFreeBSD_arm64(
     const ArchSpec &target_arch, NativeThreadProtocol &native_thread)
     : NativeRegisterContextRegisterInfo(
-          native_thread, new RegisterInfoPOSIX_arm64(target_arch))
+          native_thread, new RegisterInfoPOSIX_arm64(target_arch, 0))
 #ifdef LLDB_HAS_FREEBSD_WATCHPOINT
       ,
       m_read_dbreg(false)
 #endif
 {
-  GetRegisterInfo().ConfigureVectorRegisterInfos(
-      RegisterInfoPOSIX_arm64::eVectorQuadwordAArch64);
   ::memset(&m_hwp_regs, 0, sizeof(m_hwp_regs));
   ::memset(&m_hbp_regs, 0, sizeof(m_hbp_regs));
 }
 
 RegisterInfoPOSIX_arm64 &
 NativeRegisterContextFreeBSD_arm64::GetRegisterInfo() const {
   return static_cast<RegisterInfoPOSIX_arm64 &>(*m_register_info_interface_up);
 }
Status NativeRegisterContextFreeBSD_arm64::ReadRegisterSet(uint32_t set) {
   switch (set) {
   case RegisterInfoPOSIX_arm64::GPRegSet:
     return NativeProcessFreeBSD::PtraceWrapper(PT_GETREGS, m_thread.GetID(),
                                                m_reg_data.data());
   case RegisterInfoPOSIX_arm64::FPRegSet:
     return NativeProcessFreeBSD::PtraceWrapper(
         PT_GETFPREGS, m_thread.GetID(),
         m_reg_data.data() + sizeof(RegisterInfoPOSIX_arm64::GPR));
-  case RegisterInfoPOSIX_arm64::SVERegSet:
-    return Status("not supported");
   }
   llvm_unreachable("NativeRegisterContextFreeBSD_arm64::ReadRegisterSet");
 }
 
 Status NativeRegisterContextFreeBSD_arm64::WriteRegisterSet(uint32_t set) {
   switch (set) {
   case RegisterInfoPOSIX_arm64::GPRegSet:
     return NativeProcessFreeBSD::PtraceWrapper(PT_SETREGS, m_thread.GetID(),
                                                m_reg_data.data());
   case RegisterInfoPOSIX_arm64::FPRegSet:
     return NativeProcessFreeBSD::PtraceWrapper(
         PT_SETFPREGS, m_thread.GetID(),
         m_reg_data.data() + sizeof(RegisterInfoPOSIX_arm64::GPR));
-  case RegisterInfoPOSIX_arm64::SVERegSet:
-    return Status("not supported");
   }
   llvm_unreachable("NativeRegisterContextFreeBSD_arm64::WriteRegisterSet");
 }
 
 Status
 NativeRegisterContextFreeBSD_arm64::ReadRegister(const RegisterInfo *reg_info,
                                                  RegisterValue &reg_value) {
   Status error;