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/galileo_defconfig b/configs/galileo_defconfig
index 725b37e..6bc5b91 100644
--- a/configs/galileo_defconfig
+++ b/configs/galileo_defconfig
@@ -19,6 +19,7 @@
 CONFIG_ETH_DESIGNWARE=y
 CONFIG_DM_PCI=y
 CONFIG_DM_RTC=y
+CONFIG_SYS_NS16550=y
 CONFIG_USB=y
 CONFIG_DM_USB=y
 CONFIG_USE_PRIVATE_LIBGCC=y