SystemInitializer: Define macros for experimental targets too

llvm-svn: 372998
diff --git a/lldb/source/API/SystemInitializerFull.cpp b/lldb/source/API/SystemInitializerFull.cpp
index 4c36b9f..ba6ad6f 100644
--- a/lldb/source/API/SystemInitializerFull.cpp
+++ b/lldb/source/API/SystemInitializerFull.cpp
@@ -152,6 +152,8 @@
   ABIWindows_x86_64::op();
 
 #define LLDB_PROCESS_AMDGPU(op)
+#define LLDB_PROCESS_ARC(op)
+#define LLDB_PROCESS_AVR(op)
 #define LLDB_PROCESS_BPF(op)
 #define LLDB_PROCESS_Lanai(op)
 #define LLDB_PROCESS_MSP430(op)