lib/crypto: hash_info: Move hash_info.c into lib/crypto/

crypto/hash_info.c just contains a couple of arrays that map HASH_ALGO_*
algorithm IDs to properties of those algorithms.  It is compiled only
when CRYPTO_HASH_INFO=y, but currently CRYPTO_HASH_INFO depends on
CRYPTO.  Since this can be useful without the old-school crypto API,
move it into lib/crypto/ so that it no longer depends on CRYPTO.

This eliminates the need for FS_VERITY to select CRYPTO after it's been
converted to use lib/crypto/.

Acked-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20250630172224.46909-2-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>

crypto/Kconfig

@@ -1422,9 +1422,6 @@ config CRYPTO_USER_API_ENABLE_OBSOLETE
 
 endmenu
 
-config CRYPTO_HASH_INFO
-	bool
-
 if !KMSAN # avoid false positives from assembly
 if ARM
 source "arch/arm/crypto/Kconfig"

crypto/Makefile

@@ -204,7 +204,6 @@ obj-$(CONFIG_CRYPTO_ECRDSA) += ecrdsa_generic.o
 obj-$(CONFIG_XOR_BLOCKS) += xor.o
 obj-$(CONFIG_ASYNC_CORE) += async_tx/
 obj-$(CONFIG_ASYMMETRIC_KEY_TYPE) += asymmetric_keys/
-obj-$(CONFIG_CRYPTO_HASH_INFO) += hash_info.o
 crypto_simd-y := simd.o
 obj-$(CONFIG_CRYPTO_SIMD) += crypto_simd.o
 

lib/crypto/Kconfig

@@ -2,6 +2,9 @@
 
 menu "Crypto library routines"
 
+config CRYPTO_HASH_INFO
+	bool
+
 config CRYPTO_LIB_UTILS
 	tristate
 

lib/crypto/Makefile

@@ -8,6 +8,8 @@ quiet_cmd_perlasm = PERLASM $@
 quiet_cmd_perlasm_with_args = PERLASM $@
       cmd_perlasm_with_args = $(PERL) $(<) void $(@)
 
+obj-$(CONFIG_CRYPTO_HASH_INFO)			+= hash_info.o
+
 obj-$(CONFIG_CRYPTO_LIB_UTILS)			+= libcryptoutils.o
 libcryptoutils-y				:= memneq.o utils.o