rockchip: evb-px30: make UART5 the debug UART

In the Device Tree, UART5 is the system UART, but in the defconfig it
currently is UART2. Let's sync the two by making the defconfig use UART5
as well.

Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Signed-off-by: Quentin Schulz <quentin.schulz@cherry.de>
diff --git a/configs/evb-px30_defconfig b/configs/evb-px30_defconfig
index a5833ad..abe5456 100644
--- a/configs/evb-px30_defconfig
+++ b/configs/evb-px30_defconfig
@@ -10,7 +10,7 @@
 CONFIG_TARGET_EVB_PX30=y
 # CONFIG_TPL_LIBCOMMON_SUPPORT is not set
 CONFIG_SPL_DRIVERS_MISC=y
-CONFIG_DEBUG_UART_BASE=0xFF160000
+CONFIG_DEBUG_UART_BASE=0xff178000
 CONFIG_DEBUG_UART_CLOCK=24000000
 CONFIG_SYS_LOAD_ADDR=0x800800
 CONFIG_DEBUG_UART=y