crypto: ghash-intel - Fix building failure on x86_32

CLMUL-NI accelerated GHASH should be turned off on non-x86_64 machine.

Reported-by: Dave Young <hidave.darkstar@gmail.com>
Signed-off-by: Huang Ying <ying.huang@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

crypto/Kconfig

diff --git a/crypto/Kconfig b/crypto/Kconfig
index fd68711..81c185a 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -442,6 +442,7 @@
 
 config CRYPTO_GHASH_CLMUL_NI_INTEL
 	tristate "GHASH digest algorithm (CLMUL-NI accelerated)"
+	depends on (X86 || UML_X86) && 64BIT
 	select CRYPTO_SHASH
 	select CRYPTO_CRYPTD
 	help