iwlwifi : fix checkpatch.pl errors

Patch fixes checkpatch.pl errors for iwlwifi.

Signed-off-by: Abhijeet Kolekar <abhijeet.kolekar@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/iwlwifi/iwl-hcmd.c b/drivers/net/wireless/iwlwifi/iwl-hcmd.c
index 8300f3d..0008a35 100644
--- a/drivers/net/wireless/iwlwifi/iwl-hcmd.c
+++ b/drivers/net/wireless/iwlwifi/iwl-hcmd.c
@@ -36,7 +36,7 @@
 #include "iwl-core.h"
 
 
-#define IWL_CMD(x) case x : return #x
+#define IWL_CMD(x) case x: return #x
 
 const char *get_cmd_string(u8 cmd)
 {