cpu: Don't guard aarch64/arm modules on endianness.

Author: briansmith

src/cpu.rs

@@ -186,10 +186,13 @@ mod features {
 const _: () = assert!(size_of::<Features>() == 0);
 
 cfg_if::cfg_if! {
-    if #[cfg(all(target_arch = "aarch64", target_endian = "little"))] {
+    // Don't guard the aarch64/arm branches on `target_endian = "little"`
+    // because each module contains static assertions for endianness that
+    // we don't want to skip over.
+    if #[cfg(target_arch = "aarch64")] {
         pub mod aarch64;
         use aarch64::featureflags;
-    } else if #[cfg(all(target_arch = "arm", target_endian = "little"))] {
+    } else if #[cfg(target_arch = "arm")] {
         pub mod arm;
         use arm::featureflags;
     } else if #[cfg(any(target_arch = "x86", target_arch = "x86_64"))] {