Remove HAL initialization from #[embassy::main] macro.

examples/stm32h7/src/bin/rng.rs

@@ -5,11 +5,11 @@
 use defmt::*;
 use embassy_executor::executor::Spawner;
 use embassy_stm32::rng::Rng;
-use embassy_stm32::Peripherals;
 use {defmt_rtt as _, panic_probe as _};
 
 #[embassy_executor::main]
-async fn main(_spawner: Spawner, p: Peripherals) {
+async fn main(_spawner: Spawner) {
+    let p = embassy_stm32::init(Default::default());
     info!("Hello World!");
 
     let mut rng = Rng::new(p.RNG);