ipsec: select crypto ciphers for xfrm_algo

[ Upstream commit 597179b0ba550bd83fab1a9d57c42a9343c58514 ]

kernelci.org reports failed builds on arc because of what looks
like an old missed 'select' statement:

net/xfrm/xfrm_algo.o: In function `xfrm_probe_algs':
xfrm_algo.c:(.text+0x1e8): undefined reference to `crypto_has_ahash'

I don't see this in randconfig builds on other architectures, but
it's fairly clear we want to select the hash code for it, like we
do for all its other users. As Herbert points out, CRYPTO_BLKCIPHER
is also required even though it has not popped up in build tests.

Fixes: 17bc1970 ("ipsec: Use skcipher and ahash when probing algorithms")
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Acked-by: NHerbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: NSteffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: NSasha Levin <sashal@kernel.org>

net/xfrm/Kconfig

@@ -14,6 +14,8 @@ config XFRM_ALGO
 	tristate
 	select XFRM
 	select CRYPTO
+	select CRYPTO_HASH
+	select CRYPTO_BLKCIPHER
 
 config XFRM_USER
 	tristate "Transformation user configuration interface"