staging: sm750fb: Replace printk() with pr_info().

Fix checkpatch warning:

WARNING: printk() should include KERN_ facility level

New checkpatch warning appears after including KERN_ facility level.

Fix checkpatch warning:

WARNING: Prefer [subsystem eg: netdev]_info([subsystem]dev, ... then dev_info(dev, ... then pr_info(...  to printk(KERN_INFO ...
Signed-off-by: Elise Lennion <elise.lennion@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/sm750fb/ddk750_help.c

@@ -11,7 +11,7 @@ void ddk750_set_mmio(void __iomem *addr, unsigned short devId, char revId)
 	devId750 = devId;
 	revId750 = revId;
 	if (revId == 0xfe)
-		printk("found sm750le\n");
+		pr_info("found sm750le\n");
 }