bp/sp: add benches

Author: kazcw

blake2/benches/blake2bp.rs

@@ -0,0 +1,7 @@
+#![no_std]
+#![feature(test)]
+#[macro_use]
+extern crate digest;
+extern crate blake2;
+
+bench!(blake2::Blake2bp);

blake2/benches/blake2sp.rs

@@ -0,0 +1,7 @@
+#![no_std]
+#![feature(test)]
+#[macro_use]
+extern crate digest;
+extern crate blake2;
+
+bench!(blake2::Blake2sp);