Staging: crystalhd: prefer pr_warn to printk(KERN_WARNING)

Fix warning issue by using pr_err instead of printk
Signed-off-by: Georgiana Rodica Chelu <georgiana.chelu93@gmail.com>
Reviewed-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/crystalhd/crystalhd_misc.h

@@ -225,7 +225,7 @@ do {					\
 #define BCMLOG_ERR(fmt, args...)				\
 do {								\
 	if (g_linklog_level & BCMLOG_ERROR)			\
-		printk(KERN_ERR "*ERR*:%s:%d: "fmt,		\
+		pr_err("*ERR*:%s:%d: "fmt,      		\
 				__FILE__, __LINE__, ##args);	\
 } while (0)