pw_trace_tokenized: Add a missing dependency in CMakeLists.txt
pw_trace_tokenized: Add a missing dependency in CMakeLists.txt

pw_trace_tokenized.trace_buffer depends on pw_trace_tokenized and it was
missing which cause linking error when build using CMakeLists.txt.

Bug: b/202193001
Change-Id: I9fb0708063d5eac3de6fab0b505d6c5bd5a1b015
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/72400
Reviewed-by: Wyatt Hepler <cca3bedb37979eacd157a9bceb473582df8aea1e@google.com>
Commit-Queue: Yuanyao (YY) Zhong <62da2903921389837f3d8a099619ace2b0edf44f@google.com>

google/pigweed,google/pigweed,google/pigweed,google/pigweed,google/pigweed,google/pigweed,google/pigweed,google/pigweed,google/pigweed,google/pigweed