crypto: kdf - select SHA-256 required for self-test

The self test of the KDF is based on SHA-256. Thus, this algorithm must
be present as otherwise a warning is issued.
Reported-by: Nkernel test robot <oliver.sang@intel.com>
Signed-off-by: NStephan Mueller <smueller@chronox.de>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

crypto/Kconfig

@@ -1847,7 +1847,7 @@ config CRYPTO_JITTERENTROPY
 
 config CRYPTO_KDF800108_CTR
 	tristate
-	select CRYPTO_HASH
+	select CRYPTO_SHA256
 
 config CRYPTO_USER_API
 	tristate