build: Deny clippy::absolute_paths

Removal of absolute paths is currently in progress. To avoid regressing
those changes add a clippy deny at the workspace level and at the crate
level override with #[expect(clippy::absolute_paths)]

See: #7670

Signed-off-by: Rob Bradford <rbradford@meta.com>

devices/src/lib.rs

@@ -7,6 +7,9 @@
 
 //! Emulates virtual and hardware devices.
 
+// TODO: Trim qualified paths in this crate, then drop this expectation.
+#![cfg_attr(target_arch = "x86_64", expect(clippy::absolute_paths))]
+
 pub mod acpi;
 #[cfg(target_arch = "riscv64")]
 pub mod aia;