usb: musb: fix debug global variable name

In order to avoid namespace conflicts, add a prefix
to our kernel-wise symbol.

Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c
index 4a35745..5280dba 100644
--- a/drivers/usb/musb/musb_core.c
+++ b/drivers/usb/musb/musb_core.c
@@ -114,8 +114,8 @@
 
 
 
-unsigned debug;
-module_param(debug, uint, S_IRUGO | S_IWUSR);
+unsigned musb_debug;
+module_param(musb_debug, uint, S_IRUGO | S_IWUSR);
 MODULE_PARM_DESC(debug, "Debug message level. Default = 0");
 
 #define DRIVER_AUTHOR "Mentor Graphics, Texas Instruments, Nokia"
@@ -2248,7 +2248,7 @@
 		"host"
 #endif
 		", debug=%d\n",
-		musb_driver_name, debug);
+		musb_driver_name, musb_debug);
 	return platform_driver_probe(&musb_driver, musb_probe);
 }
 
diff --git a/drivers/usb/musb/musb_debug.h b/drivers/usb/musb/musb_debug.h
index 4d27944..9fc1db4 100644
--- a/drivers/usb/musb/musb_debug.h
+++ b/drivers/usb/musb/musb_debug.h
@@ -48,11 +48,11 @@
 				__func__, __LINE__ , ## args); \
 	} } while (0)
 
-extern unsigned debug;
+extern unsigned musb_debug;
 
 static inline int _dbg_level(unsigned l)
 {
-	return debug >= l;
+	return musb_debug >= l;
 }
 
 #define DBG(level, fmt, args...) xprintk(level, KERN_DEBUG, fmt, ## args)