rust: kernel: errno: change visibility of Error::from_errno

Signed-off-by: Fabien Parent <[email protected]>

Author: Fabo

rust/kernel/error.rs

@@ -99,7 +99,7 @@ impl Error {
     ///
     /// It is a bug to pass an out-of-range `errno`. `EINVAL` would
     /// be returned in such a case.
-    pub(crate) fn from_errno(errno: core::ffi::c_int) -> Error {
+    pub fn from_errno(errno: core::ffi::c_int) -> Error {
         if errno < -(bindings::MAX_ERRNO as i32) || errno >= 0 {
             // TODO: Make it a `WARN_ONCE` once available.
             crate::pr_warn!(