arm: Tegra2: Move clk/mux init to board_early_init_f, add GPIO init

Signed-off-by: Tom Warren <twarren@nvidia.com>
diff --git a/board/nvidia/common/board.h b/board/nvidia/common/board.h
index 47c7885..350bc57 100644
--- a/board/nvidia/common/board.h
+++ b/board/nvidia/common/board.h
@@ -25,5 +25,9 @@
 #define _BOARD_H_
 
 void tegra2_start(void);
+void clock_init(void);
+void pinmux_init(void);
+void gpio_init(void);
+void gpio_config_uart(void);
 
 #endif	/* BOARD_H */