ARM: tegra: delete stale header content

A few function prototypes were left in header files during code re-
organization. Delete them.
Signed-off-by: Stephen Warren <swarren@nvidia.com>

arch/arm/mach-tegra/board.h

@@ -28,12 +28,6 @@
 void __init tegra_map_common_io(void);
 void __init tegra_init_irq(void);
 
-#ifdef CONFIG_DEBUG_FS
-int tegra_clk_debugfs_init(void);
-#else
-static inline int tegra_clk_debugfs_init(void) { return 0; }
-#endif
-
 int __init tegra_powergate_init(void);
 #if defined(CONFIG_ARCH_TEGRA_2x_SOC) && defined(CONFIG_DEBUG_FS)
 int __init tegra_powergate_debugfs_init(void);

arch/arm/mach-tegra/pm.h

@@ -37,9 +37,6 @@ void tegra30_sleep_core_init(void);
 
 extern unsigned long l2x0_saved_regs_addr;
 
-void save_cpu_arch_register(void);
-void restore_cpu_arch_register(void);
-
 void tegra_clear_cpu_in_lp2(void);
 bool tegra_set_cpu_in_lp2(void);