ARM: OMAP: Move omap-pm-noop.c local to mach-omap2

This code should be private to mach-omap2.

The only use for it in for omap1 has been in dmtimer.c
to check for context loss. However, omap1 does not
lose context during idle, so the code is not needed.
Further, omap1 timer has OMAP_TIMER_ALWON set, so omap1
was not hitting omap_pm_get_dev_context_loss_count()
test.

Cc: Jon Hunter <jon-hunter@ti.com>
Cc: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/plat-omap/include/plat/dmtimer.h

@@ -94,6 +94,7 @@ struct dmtimer_platform_data {
 	/* set_timer_src - Only used for OMAP1 devices */
 	int (*set_timer_src)(struct platform_device *pdev, int source);
 	u32 timer_capability;
+	int (*get_context_loss_count)(struct device *);
 };
 
 int omap_dm_timer_reserve_systimer(int id);
@@ -263,6 +264,7 @@ struct omap_dm_timer {
 	unsigned reserved:1;
 	unsigned posted:1;
 	struct timer_regs context;
+	int (*get_context_loss_count)(struct device *);
 	int ctx_loss_count;
 	int revision;
 	u32 capability;