ARM: pxa: Add non device-tree timer link to clocksource

As clocksource pxa_timer was moved to clocksource framework, the
pxa_timer initialization needs to be a bit amended, to pass the
necessary informations to clocksource, ie :
- the timer interrupt (mach specific)
- the timer registers base (ditto)
- the timer clockrate

Signed-off-by: Robert Jarzmik <[e-mail]>
Signed-off-by: Daniel Lezcano <[e-mail]>

arch/arm/mach-pxa/generic.c

···
 #include <asm/mach/map.h>
 #include <asm/mach-types.h>
 
+#include <mach/irqs.h>
 #include <mach/reset.h>
 #include <mach/smemc.h>
 #include <mach/pxa3xx-regs.h>
 
 #include "generic.h"
+#include <clocksource/pxa.h>
 
 void clear_reset_status(unsigned int mask)
 {
···
 	return clock_tick_rate;
 }
 EXPORT_SYMBOL(get_clock_tick_rate);
+
+/*
+ * For non device-tree builds, keep legacy timer init
+ */
+void pxa_timer_init(void)
+{
+	pxa_timer_nodt_init(IRQ_OST0, io_p2v(0x40a00000),
+			    get_clock_tick_rate());
+}
 
 /*
  * Get the clock frequency as reflected by CCCR and the turbo flag.

include/clocksource/pxa.h

···
+/*
+ * PXA clocksource, clockevents, and OST interrupt handlers.
+ *
+ * Copyright (C) 2014 Robert Jarzmik
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ */
+
+#ifndef _CLOCKSOURCE_PXA_H
+#define _CLOCKSOURCE_PXA_H
+
+extern void pxa_timer_nodt_init(int irq, void __iomem *base,
+			   unsigned long clock_tick_rate);
+
+#endif