ARM: tegra: cpuidle: remove redundant parameters for powered-down mode

After the patch series for system suspending support, tegra_idle_lp2_last()
no longer uses its parameters cpu_on_time or cpu_off_time, so remove them.

Signed-off-by: Joseph Lo <josephl@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
diff --git a/arch/arm/mach-tegra/pm.h b/arch/arm/mach-tegra/pm.h
index 73a45f1..9d2d038 100644
--- a/arch/arm/mach-tegra/pm.h
+++ b/arch/arm/mach-tegra/pm.h
@@ -31,7 +31,7 @@
 void tegra_clear_cpu_in_lp2(int phy_cpu_id);
 bool tegra_set_cpu_in_lp2(int phy_cpu_id);
 
-void tegra_idle_lp2_last(u32 cpu_on_time, u32 cpu_off_time);
+void tegra_idle_lp2_last(void);
 extern void (*tegra_tear_down_cpu)(void);
 
 #ifdef CONFIG_PM_SLEEP