Merge #1151

1151: sys: termios: Fix inverted logic for [cfg()] conditional for sparc64 r=asomers a=glaubitz

The fix for #1149 has the logic for the [cfg()] conditional inverted
so that the aliases for VMIN and VTIME are defined on targets that
are not linux-sparc64.

Co-authored-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>

src/sys/termios.rs

@@ -583,10 +583,11 @@ libc_enum! {
     }
 }
 
-#[cfg(not(all(target_os = "linux", target_arch = "sparc64")))]
-pub const VMIN: SpecialCharacterIndices = SpecialCharacterIndices::VEOF;
-#[cfg(not(all(target_os = "linux", target_arch = "sparc64")))]
-pub const VTIME: SpecialCharacterIndices = SpecialCharacterIndices::VEOL;
+#[cfg(all(target_os = "linux", target_arch = "sparc64"))]
+impl SpecialCharacterIndices {
+    pub const VMIN: SpecialCharacterIndices = SpecialCharacterIndices::VEOF;
+    pub const VTIME: SpecialCharacterIndices = SpecialCharacterIndices::VEOL;
+}
 
 pub use libc::NCCS;
 #[cfg(any(target_os = "dragonfly",