rockchip: tpl: Remove board_early_init_f()

There is no need for board_early_init_f() in TPL, anything like this
should goes to SPL.

Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
diff --git a/arch/arm/mach-rockchip/tpl.c b/arch/arm/mach-rockchip/tpl.c
index 88f80b0..cc908e1 100644
--- a/arch/arm/mach-rockchip/tpl.c
+++ b/arch/arm/mach-rockchip/tpl.c
@@ -43,18 +43,11 @@
 	       TIMER_CONTROL_REG);
 }
 
-__weak int board_early_init_f(void)
-{
-	return 0;
-}
-
 void board_init_f(ulong dummy)
 {
 	struct udevice *dev;
 	int ret;
 
-	board_early_init_f();
-
 #if defined(CONFIG_DEBUG_UART) && defined(CONFIG_TPL_SERIAL_SUPPORT)
 	/*
 	 * Debug UART can be used from here if required: