kernel: crypto: add SHA256 ARM64 ASM optimized module

Kernel has an ASM optimized version of SHA256 that was ported from
OpenSSL, so lets package it as it provides significant perfomance
improvement compared to the generic implementation.

Signed-off-by: Robert Marko <[email protected]>

package/kernel/linux/modules/crypto.mk

@@ -984,6 +984,7 @@ define KernelPackage/crypto-sha256
 	CONFIG_CRYPTO_SHA256 \
 	CONFIG_CRYPTO_SHA256_OCTEON \
 	CONFIG_CRYPTO_SHA256_PPC_SPE \
+	CONFIG_CRYPTO_SHA256_ARM64 \
 	CONFIG_CRYPTO_SHA256_SSSE3
   FILES:= \
 	$(LINUX_DIR)/crypto/sha256_generic.ko \
@@ -992,6 +993,11 @@ define KernelPackage/crypto-sha256
   $(call AddDepends/crypto)
 endef
 
+define KernelPackage/crypto-sha256/aarch64
+  FILES+=$(LINUX_DIR)/arch/arm64/crypto/sha256-arm64.ko
+  AUTOLOAD+=$(call AutoLoad,09,sha256-arm64)
+endef
+
 define KernelPackage/crypto-sha256/octeon
   FILES+=$(LINUX_DIR)/arch/mips/cavium-octeon/crypto/octeon-sha256.ko
   AUTOLOAD+=$(call AutoLoad,09,octeon-sha256)