cnic: Fix __symbol_get() build error.

Ingo molnar <mingo@elte.hu> reported the error

drivers/net/cnic.c:2520: error: implicit declaration of function ‘__symbol_get’

when CONFIG_MODULES is not defined.  Fix by using symbol_get() instead.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
diff --git a/drivers/net/cnic_if.h b/drivers/net/cnic_if.h
index 0638096..d1bce27 100644
--- a/drivers/net/cnic_if.h
+++ b/drivers/net/cnic_if.h
@@ -296,4 +296,6 @@
 
 extern int cnic_unregister_driver(int ulp_type);
 
+extern struct cnic_eth_dev *bnx2_cnic_probe(struct net_device *dev);
+
 #endif