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/xtfpga.h b/include/configs/xtfpga.h
index 7090fce..b93451c 100644
--- a/include/configs/xtfpga.h
+++ b/include/configs/xtfpga.h
@@ -127,10 +127,10 @@
 /* Serial Driver Info */
 /*====================*/
 
-#define CONFIG_SYS_NS16550_COM1		IOADDR(0x0D050020) /* Base address */
+#define CFG_SYS_NS16550_COM1		IOADDR(0x0D050020) /* Base address */
 
 /* Input clk to NS16550 (in Hz; the SYS_CLK_FREQ is in kHz) */
-#define CONFIG_SYS_NS16550_CLK		get_board_sys_clk()
+#define CFG_SYS_NS16550_CLK		get_board_sys_clk()
 
 /*======================*/
 /* Ethernet Driver Info */