linux/compat.h: move dev_err, dev_info and dev_dbg from usb driver to compat.h

Since kernel code current use many dev_xxx() instead of using printk. To
compatible, move those dev_xxx from usb driver to linux/compat.h. Then all
driver code can use dev_err, dev_info and dev_vdbg.

This patch also removed duplicated macro definitions in usb driver.

Signed-off-by: Josh Wu <josh.wu@atmel.com>
Acked-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
diff --git a/include/linux/compat.h b/include/linux/compat.h
index e1338bf..3fdfb39 100644
--- a/include/linux/compat.h
+++ b/include/linux/compat.h
@@ -3,6 +3,14 @@
 
 #define ndelay(x)	udelay(1)
 
+#define dev_dbg(dev, fmt, args...)		\
+	debug(fmt, ##args)
+#define dev_vdbg(dev, fmt, args...)		\
+	debug(fmt, ##args)
+#define dev_info(dev, fmt, args...)		\
+	printf(fmt, ##args)
+#define dev_err(dev, fmt, args...)		\
+	printf(fmt, ##args)
 #define printk	printf
 
 #define KERN_EMERG