Rollup merge of rust-lang#147562 - tyilo:stabilize-unsigned_nonzero_div_ceil, r=joboet

Stabilize `NonZero<u*>::div_ceil`

As per rust-lang#132968 (comment)

r? libs

Author: dianqk

library/core/src/num/nonzero.rs

@@ -1373,7 +1373,6 @@ macro_rules! nonzero_integer_signedness_dependent_impls {
             /// # Examples
             ///
             /// ```
-            /// # #![feature(unsigned_nonzero_div_ceil)]
             /// # use std::num::NonZero;
             #[doc = concat!("let one = NonZero::new(1", stringify!($Int), ").unwrap();")]
             #[doc = concat!("let max = NonZero::new(", stringify!($Int), "::MAX).unwrap();")]
@@ -1383,7 +1382,11 @@ macro_rules! nonzero_integer_signedness_dependent_impls {
             #[doc = concat!("let three = NonZero::new(3", stringify!($Int), ").unwrap();")]
             /// assert_eq!(three.div_ceil(two), two);
             /// ```
-            #[unstable(feature = "unsigned_nonzero_div_ceil", issue = "132968")]
+            #[stable(feature = "unsigned_nonzero_div_ceil", since = "CURRENT_RUSTC_VERSION")]
+            #[rustc_const_stable(
+                feature = "unsigned_nonzero_div_ceil",
+                since = "CURRENT_RUSTC_VERSION"
+            )]
             #[must_use = "this returns the result of the operation, \
                           without modifying the original"]
             #[inline]