ARM: substitute arch_idle()

Now that all implementations of arch_idle() are equivalent to cpu_do_idle()
we can just use the later directly and stop including mach/system.h.

Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Acked-and-tested-by: Jamie Iles <jamie@jamieiles.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Tested-by: Stephen Warren <swarren@nvidia.com>
diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c
index ba9e7ef..008e7ce 100644
--- a/arch/arm/kernel/process.c
+++ b/arch/arm/kernel/process.c
@@ -61,8 +61,6 @@
 
 static volatile int hlt_counter;
 
-#include <mach/system.h>
-
 void disable_hlt(void)
 {
 	hlt_counter++;
@@ -191,7 +189,7 @@
 	if (arm_pm_idle)
 		arm_pm_idle();
 	else
-		arch_idle();
+		cpu_do_idle();
 	local_irq_enable();
 }
 
diff --git a/arch/arm/mach-mxs/pm.c b/arch/arm/mach-mxs/pm.c
index fb042da..a9b4bbc 100644
--- a/arch/arm/mach-mxs/pm.c
+++ b/arch/arm/mach-mxs/pm.c
@@ -15,13 +15,12 @@
 #include <linux/kernel.h>
 #include <linux/suspend.h>
 #include <linux/io.h>
-#include <mach/system.h>
 
 static int mxs_suspend_enter(suspend_state_t state)
 {
 	switch (state) {
 	case PM_SUSPEND_MEM:
-		arch_idle();
+		cpu_do_idle();
 		break;
 
 	default:
diff --git a/arch/arm/mach-omap2/pm44xx.c b/arch/arm/mach-omap2/pm44xx.c
index 62d4f36..c840689 100644
--- a/arch/arm/mach-omap2/pm44xx.c
+++ b/arch/arm/mach-omap2/pm44xx.c
@@ -173,7 +173,7 @@
  * omap_default_idle - OMAP4 default ilde routine.'
  *
  * Implements OMAP4 memory, IO ordering requirements which can't be addressed
- * with default arch_idle() hook. Used by all CPUs with !CONFIG_CPUIDLE and
+ * with default cpu_do_idle() hook. Used by all CPUs with !CONFIG_CPUIDLE and
  * by secondary CPU with CONFIG_CPUIDLE.
  */
 static void omap_default_idle(void)
@@ -253,7 +253,7 @@
 	suspend_set_ops(&omap_pm_ops);
 #endif /* CONFIG_SUSPEND */
 
-	/* Overwrite the default arch_idle() */
+	/* Overwrite the default cpu_do_idle() */
 	arm_pm_idle = omap_default_idle;
 
 	omap4_idle_init();