Disable bitmask tests on bigendian

Author: workingjubilee

src/api/bitmask.rs

@@ -21,6 +21,8 @@ macro_rules! impl_bitmask {
                     // FIXME: https://github.com/rust-lang-nursery/packed_simd/issues/210
                     all(target_arch = "mips", target_endian = "big"),
                     all(target_arch = "mips64", target_endian = "big"),
+                    all(target_arch = "powerpc", target_endian = "big"),
+                    all(target_arch = "powerpc64", target_endian = "big"),
                     target_arch = "sparc64",
                     target_arch = "s390x",
                 )))]