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/q8_a33_tablet_1024x600_defconfig b/configs/q8_a33_tablet_1024x600_defconfig
index 755f4ee..bd59bb3 100644
--- a/configs/q8_a33_tablet_1024x600_defconfig
+++ b/configs/q8_a33_tablet_1024x600_defconfig
@@ -22,4 +22,5 @@
 # CONFIG_CMD_FPGA is not set
 CONFIG_CMD_GPIO=y
 CONFIG_AXP_DLDO1_VOLT=3300
+CONFIG_SYS_NS16550=y
 CONFIG_USB_MUSB_HOST=y