kernel: Add kmod-crypto-blake2b

The kmod-fs-btrfs package has a soft dependency to kmod-crypto-blake2b

The CONFIG_BTRFS_FS kernel build option selects CONFIG_CRYPTO_BLAKE2B,
but we did not package it before.

Signed-off-by: Hauke Mehrtens <[email protected]>
Link: https://github.com/openwrt/openwrt/pull/15833
Signed-off-by: Christian Marangi <[email protected]>

package/kernel/linux/modules/crypto.mk

@@ -81,6 +81,18 @@ endef
 $(eval $(call KernelPackage,crypto-authenc))
 
 
+define KernelPackage/crypto-blake2b
+  TITLE:=Support for BLAKE2b cryptographic hash function (RFC 7693)
+  DEPENDS:=+kmod-crypto-hash
+  KCONFIG:=CONFIG_CRYPTO_BLAKE2B
+  FILES:=$(LINUX_DIR)/crypto/blake2b_generic.ko
+  AUTOLOAD:=$(call AutoLoad,09,blake2b_generic)
+  $(call AddDepends/crypto)
+endef
+
+$(eval $(call KernelPackage,crypto-blake2b))
+
+
 define KernelPackage/crypto-cbc
   TITLE:=Cipher Block Chaining CryptoAPI module
   DEPENDS:=+kmod-crypto-manager

package/kernel/linux/modules/fs.mk

@@ -67,7 +67,7 @@ $(eval $(call KernelPackage,fs-autofs4))
 define KernelPackage/fs-btrfs
   SUBMENU:=$(FS_MENU)
   TITLE:=BTRFS filesystem support
-  DEPENDS:=+kmod-lib-crc32c +kmod-lib-lzo +kmod-lib-zlib-inflate +kmod-lib-zlib-deflate +kmod-lib-raid6 +kmod-lib-xor +kmod-lib-zstd
+  DEPENDS:=+kmod-lib-crc32c +kmod-lib-lzo +kmod-lib-zlib-inflate +kmod-lib-zlib-deflate +kmod-lib-raid6 +kmod-lib-xor +kmod-lib-zstd +kmod-crypto-blake2b
   KCONFIG:=\
 	CONFIG_BTRFS_FS \
 	CONFIG_BTRFS_FS_CHECK_INTEGRITY=n