libcortex_r5: add lib.rs

libcortex_r5/src/lib.rs

@@ -0,0 +1,10 @@
+#![no_std]
+#![feature(llvm_asm, global_asm)]
+#![feature(never_type)]
+#![feature(const_fn)]
+
+extern crate alloc;
+
+pub mod asm;
+pub mod regs;
+pub mod cache;