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/MPC832XEMDS_SLAVE_defconfig b/configs/MPC832XEMDS_SLAVE_defconfig
index 467f220..7f5c55a 100644
--- a/configs/MPC832XEMDS_SLAVE_defconfig
+++ b/configs/MPC832XEMDS_SLAVE_defconfig
@@ -3,3 +3,4 @@
 CONFIG_TARGET_MPC832XEMDS=y
 CONFIG_SYS_EXTRA_OPTIONS="PCI,PCISLAVE"
 # CONFIG_CMD_SETEXPR is not set
+CONFIG_SYS_NS16550=y