drivers/net/qlge: Use pr_<level>, shrink text a bit

Add and use a few neatening macros
Remove PFX
Add #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
Convert printk(KERN_ERR to pr_err(

$ size drivers/net/qlge/built-in.o.*
  text	   data	    bss	    dec	    hex	filename
 116456	   2312	  25712	 144480	  23460	drivers/net/qlge/built-in.o.old
 114909	   2312	  25728	 142949	  22e65	drivers/net/qlge/built-in.o.new

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/qlge/qlge.h

@@ -18,8 +18,6 @@
 #define DRV_STRING 	"QLogic 10 Gigabit PCI-E Ethernet Driver "
 #define DRV_VERSION	"v1.00.00.25.00.00-01"
 
-#define PFX "qlge: "
-
 #define WQ_ADDR_ALIGN	0x3	/* 4 byte alignment */
 
 #define QLGE_VENDOR_ID    0x1077