Implement CFI for Quick.

CFI is necessary for stack unwinding in gdb, lldb, and libunwind.

Change-Id: Ic3b84c9dc91c4bae80e27cda02190f3274e95ae8
diff --git a/compiler/dex/quick/quick_compiler.cc b/compiler/dex/quick/quick_compiler.cc
index 01652d6..2c0bd47 100644
--- a/compiler/dex/quick/quick_compiler.cc
+++ b/compiler/dex/quick/quick_compiler.cc
@@ -807,7 +807,7 @@
   }
 }
 
-Mir2Lir* QuickCompiler::GetCodeGenerator(CompilationUnit* cu, void* compilation_unit) const {
+Mir2Lir* QuickCompiler::GetCodeGenerator(CompilationUnit* cu, void* compilation_unit) {
   UNUSED(compilation_unit);
   Mir2Lir* mir_to_lir = nullptr;
   switch (cu->instruction_set) {