Mention how handlers are run when drivers are moved across cores (#1568)

esp-hal/src/interrupt/mod.rs

@@ -64,6 +64,10 @@ mod riscv;
 mod xtensa;
 
 /// An interrupt handler
+#[cfg_attr(
+    multi_core,
+    doc = "**Note**: Interrupts are handled on the core they were setup on, if a driver is initialized on core 0, and moved to core 1, core 0 will still handle the interrupt."
+)]
 #[derive(Copy, Clone, Debug, PartialEq, Eq)]
 pub struct InterruptHandler {
     f: extern "C" fn(),

hil-test/tests/gpio.rs

@@ -226,6 +226,5 @@ mod tests {
 
         assert_eq!(io2.is_low(), true);
         assert_eq!(io4.is_low(), true);
-
     }
 }