Remove sys/io.h inclusion from some files that didn't need it, and change

asm/io.h to sys/io.h in vga.c, which newer Linux complains about.

hw/kdrive/ati/ati_draw.c

@@ -22,7 +22,6 @@
  * PERFORMANCE OF THIS SOFTWARE.
  */
 /* $Header$ */
-#include <sys/io.h>
 
 #ifdef HAVE_CONFIG_H
 #include <config.h>

hw/kdrive/mach64/mach64.c

@@ -25,7 +25,6 @@
 #include <config.h>
 #endif
 #include "mach64.h"
-#include <sys/io.h>
 
 static Bool
 mach64CardInit (KdCardInfo *card)

hw/kdrive/src/vga.c

@@ -32,7 +32,7 @@
 #ifdef linux
 #ifdef __i386__
 #define extern static
-#include <asm/io.h>
+#include <sys/io.h>
 #undef extern
 
 #define _VgaInb(r)	inb(r)