import-trace: introduce RegisterImporter

The RegisterImporter disassembles the binary and adds a trace event
for each byte read or written from register. The register number (Fail
Register Numbers are used) and the offset within the register are
encoded within the trace event.

Change-Id: I2d2fd720841fedeeff5f28b64f24ec5f6d2ea0c3

tools/import-trace/CMakeLists.txt

@@ -6,6 +6,7 @@ set(SRCS
 if (BUILD_LLVM_DISASSEMBLER)
   set(SRCS ${SRCS}
     InstructionImporter.cc
+    RegisterImporter.cc
   )
 
   include(FindLLVM)
@@ -30,5 +31,4 @@ if (BUILD_LLVM_DISASSEMBLER)
   target_link_libraries(import-trace fail-llvmdisassembler fail-sal ${LLVM_LIBS} ${LLVM_LDFLAGS})
 endif (BUILD_LLVM_DISASSEMBLER)
 
-
 install(TARGETS import-trace RUNTIME DESTINATION bin)