ChangeLog update.

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+2022-11-09  Niels Möller  <nisse@lysator.liu.se>
+
+       From Mamone Tarsha:
+       * powerpc64/p9/poly1305-blocks.asm: New file, multi-block radix
+       2^44 implementation. Benchmarked to give a speedup of 3.2 times on
+       Power9.
+       * powerpc64/p9/poly1305.m4 (DEFINES_BLOCK_R64, BLOCK_R64): New
+       file, new macros.
+       * powerpc64/p9/poly1305-internal.asm: Use BLOCK_R64 macro.
+       * powerpc64/machine.m4 (INC_GPR, INC_VR): New macros.
+       * powerpc64/fat/poly1305-blocks.asm: New file.
+       * poly1305-update.c: Check HAVE_NATIVE_fat_poly1305_blocks, and
+       define _nettle_poly1305_blocks_c when needed.
+       * fat-ppc.c: Fat setup for _nettle_poly1305_blocks.
+
 2022-11-07  Niels Möller  <nisse@lysator.liu.se>
 
        * configure.ac (ASM_FLAGS): New configure environment variable.