[roll third_party/pigweed] pw_tls_client: Fix typos in names

pw_tls_client_C_TIME_BACKEND -> pw_tls_client_TIME_BACKEND
generate_buid_time_header -> generate_build_time_header

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/126740

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: 5133ef1ba4de374..16c90ac21b67533
Roller-URL: https://ci.chromium.org/b/8791497901780852401
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I592cf0572c66ad2010e8549081aca2f9ade11e52
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/experimental/+/126773
Commit-Queue: Pigweed Integration Roller <pigweed-integration-roller@pigweed.google.com.iam.gserviceaccount.com>
Bot-Commit: Pigweed Integration Roller <pigweed-integration-roller@pigweed.google.com.iam.gserviceaccount.com>
diff --git a/third_party/pigweed b/third_party/pigweed
index 5133ef1..16c90ac 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 5133ef1ba4de37428a440b147dfd321487e33c64
+Subproject commit 16c90ac21b67533680983843cd101d692d4f4155