Char: ip2, macros cleanup

- remove i2os.h -- there was only macro to macro renaming or useless
  stuff
- remove another uselless stuf (NULLFUNC, NULLPTR, YES, NO)
- use outb/inb directly
- use locking functions directly
- don't define another ROUNDUP, use roundup(x, 2) instead
- some comments and whitespace cleanup
- remove some commented crap
- prepend the rest by I2 prefix to not collide with rest of the world
  like in following output (pointed out by akpm)

In file included from drivers/char/ip2/ip2main.c:128:
drivers/char/ip2/i2ellis.h:608:1: warning: "COMPLETE" redefined
In file included from include/net/netns/ipv4.h:8,
                 from include/net/net_namespace.h:13,
                 from include/linux/seq_file.h:7,
                 from include/asm/machdep.h:12,
                 from include/asm/pci.h:17,
                 from include/linux/pci.h:951,
                 from drivers/char/ip2/ip2main.c:95:
include/net/inet_frag.h:28:1: warning: this is the location of the previous definition

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/char/ip2/i2hw.h

@@ -129,7 +129,6 @@ registers, use byte operations only.
 //------------------------------------------------
 //
 #include "ip2types.h"
-#include "i2os.h"    /* For any o.s., compiler, or host-related issues */
 
 //-------------------------------------------------------------------------
 // Manifests for the I/O map:
@@ -644,5 +643,10 @@ typedef union _loadHdrStr
 #define ABS_BIGGEST_BOX 16    // Absolute the most ports per box
 #define ABS_MOST_PORTS  (ABS_MAX_BOXES * ABS_BIGGEST_BOX)
 
+#define I2_OUTSW(port, addr, count)	outsw((port), (addr), (((count)+1)/2))
+#define I2_OUTSB(port, addr, count)	outsb((port), (addr), (((count)+1))&-2)
+#define I2_INSW(port, addr, count)	insw((port), (addr), (((count)+1)/2))
+#define I2_INSB(port, addr, count)	insb((port), (addr), (((count)+1))&-2)
+
 #endif   // I2HW_H