Add fixed point header dependency for Arm Cortex A platforms

PiperOrigin-RevId: 327883228
Change-Id: I48b7c2b11bcef6116d4208ddb5fe3205ec52ce2d

tensorflow/lite/micro/tools/make/Makefile

@@ -211,8 +211,11 @@ tensorflow/lite/portable_type_to_tflitetype.h \
 tensorflow/lite/schema/schema_generated.h \
 tensorflow/lite/version.h
 
+# TODO(b/165940489): Figure out how to avoid including fixed point
+# platform-specific headers.
 THIRD_PARTY_CC_HDRS := \
 third_party/gemmlowp/fixedpoint/fixedpoint.h \
+third_party/gemmlowp/fixedpoint/fixedpoint_neon.h \
 third_party/gemmlowp/fixedpoint/fixedpoint_sse.h \
 third_party/gemmlowp/internal/detect_platform.h \
 third_party/gemmlowp/LICENSE \