[ARC] Basic support in gdb-remote process plugin

Differential Revision: https://reviews.llvm.org/D55718

llvm-svn: 375122
diff --git a/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationClient.cpp b/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationClient.cpp
index c85f491..02ba400 100644
--- a/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationClient.cpp
+++ b/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationClient.cpp
@@ -339,7 +339,7 @@
                                   // not, we assume no limit
 
   // build the qSupported packet
-  std::vector<std::string> features = {"xmlRegisters=i386,arm,mips"};
+  std::vector<std::string> features = {"xmlRegisters=i386,arm,mips,arc"};
   StreamString packet;
   packet.PutCString("qSupported");
   for (uint32_t i = 0; i < features.size(); ++i) {