[$] How to write Rust in the kernel: part 2

In 2023, Fujita Tomonoriwrote a Rust version of the existing driver for theAsix AX88796B embedded Ethernet controller. At slightly more than 100 lines,it's about as simple as a driver can be, and therefore is a useful touchstone forthe differences between writing Rust and C in the kernel. Looking at the Rustsyntax, types, and APIs used by the driver and contrasting them with the Cversion will help illustrate those differences.