rockchip: rk3399: spl: ensure that debug_uart_init is called

With the latest changes to add support for the Chromebook Bob,
initialisation through debug_uart_init() did no longer get called for
other targets.

Fix this, by moving debug_uart_init() out of the Bob-specific

Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
diff --git a/arch/arm/mach-rockchip/rk3399-board-spl.c b/arch/arm/mach-rockchip/rk3399-board-spl.c
index 906aaf4..ccc136f 100644
--- a/arch/arm/mach-rockchip/rk3399-board-spl.c
+++ b/arch/arm/mach-rockchip/rk3399-board-spl.c
@@ -185,11 +185,11 @@
 
 #define EARLY_UART
 #ifdef EARLY_UART
+	debug_uart_init();
+
 # ifdef CONFIG_TARGET_CHROMEBOOK_BOB
 	int sum, i;
 
-	debug_uart_init();
-
 	/*
 	 * Add a delay and ensure that the compiler does not optimise this out.
 	 * This is needed since the power rails tail a while to turn on, and