ath5k: qualify global modparam_nohwcrypt variable

Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath/ath5k/base.c b/drivers/net/wireless/ath/ath5k/base.c
index fce9a98..019a74d 100644
--- a/drivers/net/wireless/ath/ath5k/base.c
+++ b/drivers/net/wireless/ath/ath5k/base.c
@@ -61,8 +61,8 @@
 #include "debug.h"
 #include "ani.h"
 
-int modparam_nohwcrypt;
-module_param_named(nohwcrypt, modparam_nohwcrypt, bool, S_IRUGO);
+int ath5k_modparam_nohwcrypt;
+module_param_named(nohwcrypt, ath5k_modparam_nohwcrypt, bool, S_IRUGO);
 MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption.");
 
 static int modparam_all_channels;