Revert "GCC4.6: Convert various empty macros to inline functions"

This reverts commit 60ce53cf9f.

The commit causes build breakage for a number of boards. This results
from the fact that now the arguments of debug() actually get
referenced (even if there is hope that the compiler will optimize
away the debug() call).  The obvious fix to that probem (change the
code to always declare the referenced variables and data structures)
increases the code size, and was this rejected.  So it was decided to
revert this commit until a better solution is found.

common/usb.c

@@ -63,7 +63,7 @@
 #ifdef	USB_DEBUG
 #define	USB_PRINTF(fmt, args...)	printf(fmt , ##args)
 #else
-static inline void USB_PRINTF(const char *fmt, ...) {}
+#define USB_PRINTF(fmt, args...)
 #endif
 
 #define USB_BUFSIZ	512
@@ -970,7 +970,7 @@ void usb_scan_devices(void)
 #ifdef	USB_HUB_DEBUG
 #define	USB_HUB_PRINTF(fmt, args...)	printf(fmt , ##args)
 #else
-static inline void USB_HUB_PRINTF(const char *fmt, ...) {}
+#define USB_HUB_PRINTF(fmt, args...)
 #endif
 
 

common/usb_storage.c

@@ -63,7 +63,7 @@
 #ifdef	USB_STOR_DEBUG
 #define USB_STOR_PRINTF(fmt, args...)	printf(fmt , ##args)
 #else
-static inline void USB_STOR_PRINTF(const char *fmt, ...) {}
+#define USB_STOR_PRINTF(fmt, args...)
 #endif
 
 #include <scsi.h>

include/common.h

@@ -120,8 +120,8 @@ typedef volatile unsigned char	vu_char;
 #define debug(fmt,args...)	printf (fmt ,##args)
 #define debugX(level,fmt,args...) if (DEBUG>=level) printf(fmt,##args);
 #else
-static inline void debug(const char *fmt, ...) {}
-static inline void debugX(int level, const char *fmt, ...) {}
+#define debug(fmt,args...)
+#define debugX(level,fmt,args...)
 #endif	/* DEBUG */
 
 #ifdef DEBUG

include/i2c.h

@@ -55,10 +55,7 @@
 #else
 #define CONFIG_SYS_MAX_I2C_BUS		1
 #define I2C_GET_BUS()		0
-static inline int I2C_SET_BUS(unsigned int bus)
-{
-	return 0;
-}
+#define I2C_SET_BUS(a)
 #endif
 
 /* define the I2C bus number for RTC and DTT if not already done */