[wlan] Suppress unused but not set warnings in third party code

Bug: 77973
Change-Id: Ic3987b6121c2a6789688431cf9b71f236eaa04a4
Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/560664
Fuchsia-Auto-Submit: Shai Barack <shayba@google.com>
Commit-Queue: Auto-Submit <auto-submit@fuchsia-infra.iam.gserviceaccount.com>
Reviewed-by: Tamir Duberstein <tamird@google.com>
diff --git a/build/config/BUILD.gn b/build/config/BUILD.gn
index 904f099..a5f6c0a 100644
--- a/build/config/BUILD.gn
+++ b/build/config/BUILD.gn
@@ -819,8 +819,7 @@
   visibility = [
     "//garnet/bin/insntrace/*",
     "//src/connectivity/network/tools/nc/third_party/openbsd-netcat/*",
-    "//src/connectivity/wlan/drivers/third_party/atheros/ath10k/*",
-    "//src/connectivity/wlan/drivers/third_party/broadcom/brcmfmac/*",
+    "//src/connectivity/wlan/drivers/third_party/*",
     "//src/graphics/drivers/msd-intel-gen/src",
     "//third_party/*",
     "//vendor/*",
diff --git a/src/connectivity/wlan/drivers/third_party/intel/iwlwifi/BUILD.gn b/src/connectivity/wlan/drivers/third_party/intel/iwlwifi/BUILD.gn
index 1d51b3e..f030895 100644
--- a/src/connectivity/wlan/drivers/third_party/intel/iwlwifi/BUILD.gn
+++ b/src/connectivity/wlan/drivers/third_party/intel/iwlwifi/BUILD.gn
@@ -104,7 +104,10 @@
 # tests.
 source_set("pcie") {
   visibility = [ "//src/connectivity/wlan/drivers/third_party/intel/iwlwifi/*" ]
-  configs += [ "//build/config:all_source" ]
+  configs += [
+    "//build/config:all_source",
+    "//build/config:Wno-unused-but-set-variable",
+  ]
   sources = [
     "pcie/bind.cc",
     "pcie/drv.c",