nvmet-auth: select the intended CRYPTO_DH_RFC7919_GROUPS

Commit 71ebe3842ebe ("nvmet-auth: Diffie-Hellman key exchange support")
intends to select 'Support for RFC 7919 FFDHE group parameters' for using
FFDHE groups for NVMe In-Band Authentication.

It however selects CRYPTO_DH_GROUPS_RFC7919, instead of the intended
CRYPTO_DH_RFC7919_GROUPS; notice the swapping of words here.

Correct the select to the intended config option.

Signed-off-by: Lukas Bulwahn <[e-mail]>
Reviewed-by: Hannes Reinecke <[e-mail]>
Signed-off-by: Christoph Hellwig <[e-mail]>
Signed-off-by: Jens Axboe <[e-mail]>

drivers/nvme/target/Kconfig

···
 	select CRYPTO_SHA256
 	select CRYPTO_SHA512
 	select CRYPTO_DH
-	select CRYPTO_DH_GROUPS_RFC7919
+	select CRYPTO_DH_RFC7919_GROUPS
 	help
 	  This enables support for NVMe over Fabrics In-band Authentication