[CRYPTO] hifn: Make Kconfig option depend on PCI

The HIFN driver is currently selectable on s390 but wont compile.
Since it looks like HIFN needs PCI make the Kconfig dependent on PCI,
which is not available on s390.

Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Acked-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/Kconfig

@@ -88,6 +88,7 @@ config CRYPTO_DEV_HIFN_795X
 	select CRYPTO_DES
 	select CRYPTO_ALGAPI
 	select CRYPTO_ABLKCIPHER
+	depends on PCI
 	help
 	  This option allows you to have support for HIFN 795x crypto adapters.