Fix i81x cursor.
 [rsc] --rw-rw-r-- M 129339 glenda sys 12036 Dec 12 07:20 sys/src/cmd/aux/vga/i81x.c
	/n/sourcesdump/2005/1212/plan9/sys/src/cmd/aux/vga/i81x.c:314,319 - 
	/n/sourcesdump/2005/1213/plan9/sys/src/cmd/aux/vga/i81x.c:314,320
	  	int i;
	  	ulong *rp;
	  	I81x *i81x;
	+ 	char *p;
	  
	  	i81x = vga->private;
	  
	/n/sourcesdump/2005/1212/plan9/sys/src/cmd/aux/vga/i81x.c:337,342 - 
	/n/sourcesdump/2005/1213/plan9/sys/src/cmd/aux/vga/i81x.c:338,357
	  		*rp++ = i81x->lcd[i];
	  	/* set cursor, graphic mode */
	  	rp = (ulong*)(i81x->mmio+0x70008);
	+ 	*rp = i81x->pixconf | (1<<8);
	+ 
	+ 	p = (char*)(i81x->mmio+Pixmask);		/* DACMASK */
	+ 	*p = 0xff;
	+ 	p = (char*)(i81x->mmio+PaddrW);		/* DACWX */
	+ 	*p = 0x04;
	+ 	p = (char*)(i81x->mmio+Pdata);		/* DACDATA */
	+ 	*p = 0xff;
	+ 	*p = 0xff;
	+ 	*p = 0xff;
	+ 	*p = 0x00;
	+ 	*p = 0x00;
	+ 	*p = 0x00;
	+ 
	  	*rp = i81x->pixconf;
	  
	  	ctlr->flag |= Fload;