[mlgo] Use LLVM_HAVE_TFLITE instead of LLVM_HAVE_TF_API

[kazu]

Summary

This patch replaces uses of LLVM_HAVE_TF_API with LLVM_HAVE_TFLITE in
a couple of CMakeLists.txt.

Now that 842b0d0fe2dd142305a9461e50cdce9aff7f86bc has landed,
we now have:

LLVM_HAVE_TF_API is defined if and only if LLVM_HAVE_TFLITE
evaluates to true

in the CMake variable world (assuming that you do not set
LLVM_HAVE_TF_API on the cmake invocation).

FWIW, the story is a little different in the C++ macro world, where:

LLVM_HAVE_TF_API is defined if and only if LLVM_HAVE_TFLITE is
defined

This is why edc83a15b45e6b91fce3f35622a6b0a6d34e5211 consisted only of
mechanical replacements.

llvm/lib/Analysis/CMakeLists.txt

-if (DEFINED LLVM_HAVE_TF_AOT OR DEFINED LLVM_HAVE_TF_API)
+if (DEFINED LLVM_HAVE_TF_AOT OR LLVM_HAVE_TFLITE)
   include(TensorFlowCompile)
   set(LLVM_INLINER_MODEL_PATH_DEFAULT "models/inliner-Oz")
 
   set(LLVM_INLINER_MODEL_CURRENT_URL "<UNSPECIFIED>" CACHE STRING "URL to download the LLVM inliner model")
 
   if (DEFINED LLVM_HAVE_TF_AOT)
     tf_find_and_compile(
       ${LLVM_INLINER_MODEL_PATH}
       ${LLVM_INLINER_MODEL_CURRENT_URL}
       ${LLVM_INLINER_MODEL_PATH_DEFAULT}
       "models/gen-inline-oz-test-model.py"
       serve
       action
       InlinerSizeModel
       llvm::InlinerSizeModel
     )
   endif()
 
-  if (DEFINED LLVM_HAVE_TF_API)
-    if (LLVM_HAVE_TFLITE)
-      build_proto(
-        tensorflow/core/protobuf/error_codes
-        tensorflow/core/example/feature
-        tensorflow/core/example/example)
-      list(APPEND MLLinkDeps 
-        tensorflow-lite::tensorflow-lite
-        protobuf::libprotobuf)
-    else()
-      list(APPEND MLLinkDeps ${tensorflow_c_api} ${tensorflow_fx})
-    endif()
+    list(APPEND MLLinkDeps
   endif()
 endif()
 
 add_llvm_component_library(LLVMAnalysis
   AliasAnalysis.cpp
   AliasAnalysisEvaluator.cpp
   AliasAnalysisSummary.cpp
   AliasSetTracker.cpp

llvm/unittests/Analysis/CMakeLists.txt

 set(LLVM_LINK_COMPONENTS
   Analysis
   AsmParser
   Core
   Support
   TransformUtils
   )
 
 set(MLGO_TESTS TFUtilsTest.cpp TrainingLoggerTest.cpp)
-if (DEFINED LLVM_HAVE_TF_API)
+if (LLVM_HAVE_TFLITE)
   LIST(APPEND EXTRA_TESTS ${MLGO_TESTS})
 else()
   LIST(APPEND LLVM_OPTIONAL_SOURCES ${MLGO_TESTS})
 endif()
 
 add_llvm_unittest_with_input_files(AnalysisTests
   AliasAnalysisTest.cpp
   AliasSetTrackerTest.cpp