[AVR] Raise and link to a tracking issue for the avr-interrupt calling convention

Also fix the order of the feature gate to fix the tidy errors.

Author: dylanmckay

src/librustc_feature/active.rs

@@ -342,9 +342,6 @@ declare_features! (
     /// Allows `extern "msp430-interrupt" fn()`.
     (active, abi_msp430_interrupt, "1.16.0", Some(38487), None),
 
-    /// Allows `extern "avr-interrupt" fn()` and `extern "avr-non-blocking-interrupt" fn()`.
-    (active, abi_avr_interrupt, "1.41.0", None, None),
-
     /// Allows declarative macros 2.0 (`macro`).
     (active, decl_macro, "1.17.0", Some(39412), None),
 
@@ -555,6 +552,9 @@ declare_features! (
     /// Allows the use of `no_sanitize` attribute.
     (active, no_sanitize, "1.42.0", Some(39699), None),
 
+    /// Allows `extern "avr-interrupt" fn()` and `extern "avr-non-blocking-interrupt" fn()`.
+    (active, abi_avr_interrupt, "1.42.0", Some(69664), None),
+
     // -------------------------------------------------------------------------
     // feature-group-end: actual feature gates
     // -------------------------------------------------------------------------