More cleanups.

Split Compaq Deskpro off to separae file. Renamed PIIX files to intel_ prefix.
Re-enabled Compaq machines; the Portable II works fine now.

src/machine/m_xt_compaq.c

@@ -0,0 +1,52 @@
+/*
+ * 86Box	A hypervisor and IBM PC system emulator that specializes in
+ *		running old operating systems and software designed for IBM
+ *		PC systems and compatibles from 1981 through fairly recent
+ *		system designs based on the PCI bus.
+ *
+ *		This file is part of the 86Box distribution.
+ *
+ *		Emulation of various Compaq XT-class PC's.
+ *
+ * Version:	@(#)m_xt_compaq.c	1.0.1	2017/11/11
+ *
+ * Authors:	Sarah Walker, <http://pcem-emulator.co.uk/>
+ *		Miran Grca, <mgrca8@gmail.com>
+ *		TheCollector1995, <mariogplayer@gmail.com>
+ *
+ *		Copyright 2008-2017 Sarah Walker.
+ *		Copyright 2016,2017 Miran Grca.
+ */
+#include <stdio.h>
+#include <stdint.h>
+#include <string.h>
+#include <wchar.h>
+#include "../86box.h"
+#include "../cpu/cpu.h"
+#include "../nmi.h"
+#include "../pit.h"
+#include "../mem.h"
+#include "../rom.h"
+#include "../device.h"
+#include "../game/gameport.h"
+#include "../keyboard.h"
+#include "machine.h"
+
+
+void
+machine_xt_compaq_init(machine_t *model)
+{
+    machine_common_init(model);
+
+    pit_set_out_func(&pit, 1, pit_refresh_timer_xt);
+
+    device_add(&keyboard_xt_device);
+    nmi_init();
+    if (joystick_type != 7)
+	device_add(&gameport_device);
+
+    switch(model->id) {
+	case ROM_PORTABLE:
+		break;
+    }
+}