CAN peripheral support

scripts/can-clk-calc/src/main.rs

@@ -0,0 +1,14 @@
+use va416xx_hal::can::calculate_all_viable_clock_configs;
+use va416xx_hal::time::Hertz;
+
+fn main() {
+    let cfgs = calculate_all_viable_clock_configs(
+        Hertz::from_raw(20_000_000),
+        Hertz::from_raw(250_000),
+        0.75,
+    )
+    .unwrap();
+    for cfg in &cfgs {
+        println!("Config: {:#?}", cfg);
+    }
+}