powerpc/crypto: rework Kconfig

This patch creates a new submenu for the NX cryptographic
hardware accelerator and breaks the NX options into their own
Kconfig file under drivers/crypto/nx/Kconfig.

This will permit additional NX functionality to be easily
and more cleanly added in the future without touching
drivers/crypto/Makefile|Kconfig.

Signed-off-by: Seth Jennings <sjenning@linux.vnet.ibm.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 17 insertions, 0 deletions

diff --git a/drivers/crypto/nx/Kconfig b/drivers/crypto/nx/Kconfig
new file mode 100644
index 000000000000..dedde535024e
--- /dev/null
+++ b/drivers/crypto/nx/Kconfig
@@ -0,0 +1,17 @@
+config CRYPTO_DEV_NX_ENCRYPT
+        tristate "Encryption acceleration support"
+        depends on PPC64 && IBMVIO
+        default y
+        select CRYPTO_AES
+        select CRYPTO_CBC
+        select CRYPTO_ECB
+        select CRYPTO_CCM
+        select CRYPTO_GCM
+        select CRYPTO_AUTHENC
+        select CRYPTO_XCBC
+        select CRYPTO_SHA256
+        select CRYPTO_SHA512
+        help
+          Support for Power7+ in-Nest encryption acceleration. This
+          module supports acceleration for AES and SHA2 algorithms. If you
+          choose 'M' here, this module will be called nx_crypto.