roll: pigweed, pw_toolchain: bazel: Encapsulate rp2040 WORKSPACE deps into deps.bazl

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/217219
Lint: Lint 🤖 <android-build-ayeaye@system.gserviceaccount.com>

https://pigweed.googlesource.com/pigweed/pigweed
pigweed, pw_toolchain Rolled-Commits: fbb072a3e3d0a9b..5880c31b48ea299
Roller-URL: https://ci.chromium.org/b/8744132996374073937
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I72f19f43a10731dd8830886ed1a875b9dc92a20b
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/quickstart/bazel/+/218253
Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Commit-Queue: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Lint: Lint 🤖 <android-build-ayeaye@system.gserviceaccount.com>

WORKSPACE

diff --git a/WORKSPACE b/WORKSPACE
index c60d5b9..69f39e3 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -84,8 +84,8 @@
     name = "pigweed",
     # ROLL: Warning: this entry is automatically updated.
     # ROLL: Last updated 2024-06-25.
-    # ROLL: By https://cr-buildbucket.appspot.com/build/8744133394117057665.
-    commit = "fbb072a3e3d0a9b861a2003bbdb7cb79f576d421",
+    # ROLL: By https://cr-buildbucket.appspot.com/build/8744132996374073937.
+    commit = "5880c31b48ea299070dd2ce244c20b2b1d9fcd4b",
     remote = "https://pigweed.googlesource.com/pigweed/pigweed.git",
 )
 
@@ -93,8 +93,8 @@
     name = "pw_toolchain",
     # ROLL: Warning: this entry is automatically updated.
     # ROLL: Last updated 2024-06-25.
-    # ROLL: By https://cr-buildbucket.appspot.com/build/8744133394117057665.
-    commit = "fbb072a3e3d0a9b861a2003bbdb7cb79f576d421",
+    # ROLL: By https://cr-buildbucket.appspot.com/build/8744132996374073937.
+    commit = "5880c31b48ea299070dd2ce244c20b2b1d9fcd4b",
     remote = "https://pigweed.googlesource.com/pigweed/pigweed.git",
     strip_prefix = "pw_toolchain_bazel",
 )