arm: s5p4418: dm_serial: remove old code / add DEBUG_UART

Remove init of UART-clock and UART-reset in arch_cpu_init(). Add DEBUG_UART
to s5p4418_nanopi2_defconfig.

Signed-off-by: Stefan Bosch <stefan_b@posteo.net>
diff --git a/configs/s5p4418_nanopi2_defconfig b/configs/s5p4418_nanopi2_defconfig
index 35e7c88..0645b09 100644
--- a/configs/s5p4418_nanopi2_defconfig
+++ b/configs/s5p4418_nanopi2_defconfig
@@ -11,12 +11,15 @@
 CONFIG_DM_GPIO=y
 CONFIG_DEFAULT_DEVICE_TREE="s5p4418-nanopi2"
 CONFIG_SYS_PROMPT="nanopi2# "
+CONFIG_DEBUG_UART_BASE=0xC00A1000
+CONFIG_DEBUG_UART_CLOCK=150000000
 CONFIG_TARGET_NANOPI2=y
 CONFIG_S5P4418_ONEWIRE=y
 CONFIG_ROOT_DEV=1
 CONFIG_BOOT_PART=1
 CONFIG_ROOT_PART=2
 CONFIG_SYS_LOAD_ADDR=0x71080000
+CONFIG_DEBUG_UART=y
 CONFIG_SYS_MEMTEST_START=0x71000000
 CONFIG_SYS_MEMTEST_END=0xb0000000
 CONFIG_HAS_CUSTOM_SYS_INIT_SP_ADDR=y
@@ -54,7 +57,8 @@
 CONFIG_PINCTRL=y
 CONFIG_DM_PMIC=y
 CONFIG_DM_REGULATOR=y
-CONFIG_CONS_INDEX=0
+CONFIG_DEBUG_UART_PL011=y
+CONFIG_DEBUG_UART_SKIP_INIT=y
 CONFIG_VIDEO=y
 CONFIG_VIDEO_LOGO=y
 CONFIG_DISPLAY=y