Add MSA optimized I422ToYUY2Row, I422ToUYVYRow functions

include/libyuv/macros_msa.h

 /*
  *  Copyright 2016 The LibYuv Project Authors. All rights reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS. All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 53 matching lines @@
                  Return Type - as per RTYPE
    Details     : Byte elements from 'in0' & 'in1' are copied selectively to
                  'out0' as per control vector 'mask0'
 */
 #define VSHF_B2(RTYPE, in0, in1, in2, in3, mask0, mask1, out0, out1) {   \
   out0 = (RTYPE) __msa_vshf_b((v16i8) mask0, (v16i8) in1, (v16i8) in0);  \
   out1 = (RTYPE) __msa_vshf_b((v16i8) mask1, (v16i8) in3, (v16i8) in2);  \
 }
 #define VSHF_B2_UB(...) VSHF_B2(v16u8, __VA_ARGS__)
 
+/* Description : Interleave both left and right half of input vectors
+   Arguments   : Inputs  - in0, in1
+                 Outputs - out0, out1
+                 Return Type - as per RTYPE
+   Details     : Right half of byte elements from 'in0' and 'in1' are
+                 interleaved and written to 'out0'
+*/
+#define ILVRL_B2(RTYPE, in0, in1, out0, out1) {           \
+  out0 = (RTYPE) __msa_ilvr_b((v16i8) in0, (v16i8) in1);  \
+  out1 = (RTYPE) __msa_ilvl_b((v16i8) in0, (v16i8) in1);  \
+}
+#define ILVRL_B2_UB(...) ILVRL_B2(v16u8, __VA_ARGS__)
+
 #endif  /* !defined(LIBYUV_DISABLE_MSA) && defined(__mips_msa) */
 
 #endif  // INCLUDE_LIBYUV_MACROS_MSA_H_