rcc: Add peripheral reset and control (#12)

Adds helper functions for enabling, resetting and disabling peripherals
via the RCC control interface.

Note: This also disables builds for the STM32H56/7x processors as the
STM32H5 PAC crate does not provide the necessary definitions for the RCC
at this time.

Author: astapleton

src/rcc.rs

@@ -8,6 +8,7 @@ use crate::time::Hertz;
 use log::debug;
 
 mod core_clocks;
+mod rec;
 mod reset_reason;
 
 pub use core_clocks::CoreClocks;