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/am335x_guardian.h b/include/configs/am335x_guardian.h
index cb649b5..7c5e7ce 100644
--- a/include/configs/am335x_guardian.h
+++ b/include/configs/am335x_guardian.h
@@ -83,12 +83,12 @@
 #define CONSOLE_COLOR_RED 0x001F
 
 /* NS16550 Configuration */
-#define CONFIG_SYS_NS16550_COM1		0x44e09000	/* UART0 */
-#define CONFIG_SYS_NS16550_COM2		0x48022000	/* UART1 */
-#define CONFIG_SYS_NS16550_COM3		0x48024000	/* UART2 */
-#define CONFIG_SYS_NS16550_COM4		0x481a6000	/* UART3 */
-#define CONFIG_SYS_NS16550_COM5		0x481a8000	/* UART4 */
-#define CONFIG_SYS_NS16550_COM6		0x481aa000	/* UART5 */
+#define CFG_SYS_NS16550_COM1		0x44e09000	/* UART0 */
+#define CFG_SYS_NS16550_COM2		0x48022000	/* UART1 */
+#define CFG_SYS_NS16550_COM3		0x48024000	/* UART2 */
+#define CFG_SYS_NS16550_COM4		0x481a6000	/* UART3 */
+#define CFG_SYS_NS16550_COM5		0x481a8000	/* UART4 */
+#define CFG_SYS_NS16550_COM6		0x481aa000	/* UART5 */
 
 #ifdef CONFIG_MTD_RAW_NAND
 #define CFG_SYS_NAND_ECCPOS  {   2,   3,   4,   5,   6,   7,   8,   9, \