Introduce the ast10x0 i3c peripheral

MODULE.bazel

@@ -30,6 +30,11 @@ git_override(
         "//third_party/pigweed:integration_tests_armv7m.patch",
         # Stage .bin alongside .elf in system_image_test runfiles.
         "//third_party/pigweed:system_image_test_bin_runfiles.patch",
+        # syscall_defs is pure type defs that the kernel always depends on, but
+        # upstream gates it incompatible unless userspace_build is enabled. That
+        # breaks every userspace=False system_image (i2c/i3c/smc/...). Drop the
+        # gate so kernel-only images build again.
+        "//third_party/pigweed:syscall_defs_always_compatible.patch",
     ],
     remote = "https://pigweed.googlesource.com/pigweed/pigweed",
 )

target/ast10x0/peripherals/BUILD.bazel

@@ -24,6 +24,16 @@ rust_library(
         "i2c/timing.rs",
         "i2c/transfer.rs",
         "i2c/types.rs",
+        "i3c/ccc.rs",
+        "i3c/config.rs",
+        "i3c/constants.rs",
+        "i3c/controller.rs",
+        "i3c/error.rs",
+        "i3c/hardware.rs",
+        "i3c/ibi.rs",
+        "i3c/mod.rs",
+        "i3c/registers.rs",
+        "i3c/types.rs",
         "lib.rs",
         "scu/clock.rs",
         "scu/mod.rs",
@@ -67,10 +77,13 @@ rust_library(
         "@ast1060_pac",
         "@pigweed//pw_log/rust:pw_log",
         "@rust_crates//:bitflags",
+        "@rust_crates//:cortex-m",
+        "@rust_crates//:critical-section",
         "@rust_crates//:embedded-hal",
         "@rust_crates//:embedded-hal-nb",
         "@rust_crates//:embedded-io",
         "@rust_crates//:embedded-storage",
+        "@rust_crates//:heapless",
         "@rust_crates//:nb",
     ],
 )