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/calimain_defconfig b/configs/calimain_defconfig
index 6dd5b52..374023e 100644
--- a/configs/calimain_defconfig
+++ b/configs/calimain_defconfig
@@ -6,3 +6,4 @@
 CONFIG_AUTOBOOT_STOP_STR="\x0b"
 CONFIG_CMD_GPIO=y
 # CONFIG_CMD_SETEXPR is not set
+CONFIG_SYS_NS16550=y