global: Move remaining CONFIG_SYS_NS16550_* to CFG_SYS_NS16550_*

The rest of the unmigrated CONFIG symbols in the CONFIG_SYS_NS16550
namespace do not easily transition to Kconfig. In many cases they likely
should come from the device tree instead. Move these out of CONFIG
namespace and in to CFG namespace.

Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/include/configs/tec-ng.h b/include/configs/tec-ng.h
index f8e741a..0987966 100644
--- a/include/configs/tec-ng.h
+++ b/include/configs/tec-ng.h
@@ -14,7 +14,7 @@
 
 /* Board-specific serial config */
 #define CONFIG_TEGRA_ENABLE_UARTD
-#define CONFIG_SYS_NS16550_COM1		NV_PA_APB_UARTD_BASE
+#define CFG_SYS_NS16550_COM1		NV_PA_APB_UARTD_BASE
 
 /* Environment in eMMC, at the end of 2nd "boot sector" */