crypto: x86 - Add optimized MORUS implementations

This patch adds optimized implementations of MORUS-640 and MORUS-1280,
utilizing the SSE2 and AVX2 x86 extensions.

For MORUS-1280 (which operates on 256-bit blocks) we provide both AVX2
and SSE2 implementation. Although SSE2 MORUS-1280 is slower than AVX2
MORUS-1280, it is comparable in speed to the SSE2 MORUS-640.

Signed-off-by: Ondrej Mosnacek <omosnacek@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

crypto/Kconfig

@@ -348,6 +348,14 @@ config CRYPTO_MORUS640_GLUE
 	  Common glue for SIMD optimizations of the MORUS-640 dedicated AEAD
 	  algorithm.
 
+config CRYPTO_MORUS640_SSE2
+	tristate "MORUS-640 AEAD algorithm (x86_64 SSE2 implementation)"
+	depends on X86 && 64BIT
+	select CRYPTO_AEAD
+	select CRYPTO_MORUS640_GLUE
+	help
+	  SSE2 implementation of the MORUS-640 dedicated AEAD algorithm.
+
 config CRYPTO_MORUS1280
 	tristate "MORUS-1280 AEAD algorithm"
 	select CRYPTO_AEAD
@@ -362,6 +370,24 @@ config CRYPTO_MORUS1280_GLUE
 	  Common glue for SIMD optimizations of the MORUS-1280 dedicated AEAD
 	  algorithm.
 
+config CRYPTO_MORUS1280_SSE2
+	tristate "MORUS-1280 AEAD algorithm (x86_64 SSE2 implementation)"
+	depends on X86 && 64BIT
+	select CRYPTO_AEAD
+	select CRYPTO_MORUS1280_GLUE
+	help
+	  SSE2 optimizedimplementation of the MORUS-1280 dedicated AEAD
+	  algorithm.
+
+config CRYPTO_MORUS1280_AVX2
+	tristate "MORUS-1280 AEAD algorithm (x86_64 AVX2 implementation)"
+	depends on X86 && 64BIT
+	select CRYPTO_AEAD
+	select CRYPTO_MORUS1280_GLUE
+	help
+	  AVX2 optimized implementation of the MORUS-1280 dedicated AEAD
+	  algorithm.
+
 config CRYPTO_SEQIV
 	tristate "Sequence Number IV Generator"
 	select CRYPTO_AEAD