[PATCH net] crypto: chtls - Fix build error without IPV6

[YueHaibing]

If IPV6 is not set, build fails:

drivers/crypto/chelsio/chcr_ktls.c: In function âchcr_ktls_act_open_req6â:
./include/net/sock.h:380:37: error: âstruct sock_commonâ has no member named âskc_v6_rcv_saddrâ; did you mean âskc_rcv_saddrâ?
 #define sk_v6_rcv_saddr __sk_common.skc_v6_rcv_saddr
                                     ^
drivers/crypto/chelsio/chcr_ktls.c:258:37: note: in expansion of macro âsk_v6_rcv_saddrâ
  cpl->local_ip_hi = *(__be64 *)&sk->sk_v6_rcv_saddr.in6_u.u6_addr8[0];
                                     ^~~~~~~~~~~~~~~

Add IPV6 dependency to fix this.

Reported-by: Hulk Robot <hulkci@xxxxxxxxxx>
Fixes: 62370a4f346d ("cxgb4/chcr: Add ipv6 support and statistics")
Signed-off-by: YueHaibing <yuehaibing@xxxxxxxxxx>
---
 drivers/crypto/chelsio/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/crypto/chelsio/Kconfig b/drivers/crypto/chelsio/Kconfig
index f2756836093f..7bf1d8152a5d 100644
--- a/drivers/crypto/chelsio/Kconfig
+++ b/drivers/crypto/chelsio/Kconfig
@@ -47,6 +47,7 @@ config CHELSIO_TLS_DEVICE
 	bool "Chelsio Inline KTLS Offload"
 	depends on CHELSIO_T4
 	depends on TLS_DEVICE
+	depends on IPV6
 	select CRYPTO_DEV_CHELSIO
 	default y
 	help
-- 
2.17.1