ns16550: move CONFIG_SYS_NS16550 to Kconfig

Move CONFIG_SYS_NS16550 to Kconfig, and run moveconfig.py.

Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
diff --git a/configs/arches_defconfig b/configs/arches_defconfig
index 9084a3a..245e6fa 100644
--- a/configs/arches_defconfig
+++ b/configs/arches_defconfig
@@ -4,3 +4,4 @@
 CONFIG_ARCHES=y
 CONFIG_DEFAULT_DEVICE_TREE="arches"
 CONFIG_OF_CONTROL=y
+CONFIG_SYS_NS16550=y