Update Xtensa VP6 library name from annlib to tflmlib (#1124)

BUG=b/228102789
Co-authored-by: Nmergify[bot] <37929162+mergify[bot]@users.noreply.github.com>

tensorflow/lite/micro/kernels/BUILD

@@ -323,7 +323,7 @@ tflm_kernel_cc_library(
         xtensa_fusion_f1_config(): ["//third_party/xtensa/nnlib_hifi4:nnlib_hifi4_lib"],
         xtensa_hifi_3z_config(): ["//third_party/xtensa/nnlib_hifi4:nnlib_hifi4_lib"],
         xtensa_hifi_5_config(): ["//third_party/xtensa/nnlib_hifi5:nnlib_hifi5_lib"],
-        xtensa_vision_p6_config(): ["//third_party/xtensa/xi_annlib_vision_p6:xi_annlib_vision_p6_lib"],
+        xtensa_vision_p6_config(): ["//third_party/xtensa/xi_tflmlib_vision_p6:xi_tflmlib_vision_p6_lib"],
         "//conditions:default": [],
     }),
 )