[PATCH 4/6] fbdev: savage: fix -Wextra build warning

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When 'SAVAGEFB_DEBUG' is not defined, modify the DBG() macro to use the
no_printk() macro instead of using <empty>.
This fixes a build warning when -Wextra is used and provides
printk format checking:

../drivers/video/fbdev/savage/savagefb_driver.c:2411:13: warning: suggest braces around empty body in an ‘if’ statement [-Wempty-body]

Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Cc: Antonino Daplas <adaplas@xxxxxxxxx>
Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@xxxxxxxxxxx>
Cc: dri-devel@xxxxxxxxxxxxxxxxxxxxx
Cc: linux-fbdev@xxxxxxxxxxxxxxx
---
Alternative: use pr_debug() so that CONFIG_DYNAMIC_DEBUG can be used
at these sites.

 drivers/video/fbdev/savage/savagefb.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- linux-next-20200313.orig/drivers/video/fbdev/savage/savagefb.h
+++ linux-next-20200313/drivers/video/fbdev/savage/savagefb.h
@@ -21,7 +21,7 @@
 #ifdef SAVAGEFB_DEBUG
 # define DBG(x)		printk (KERN_DEBUG "savagefb: %s\n", (x));
 #else
-# define DBG(x)
+# define DBG(x)		no_printk(x)
 # define SavagePrintRegs(...)
 #endif
 
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