global: Move remaining CONFIG_SYS_* to CFG_SYS_*

The rest of the unmigrated CONFIG symbols in the CONFIG_SYS 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/exynos5-dt-common.h b/include/configs/exynos5-dt-common.h
index a94f5a1..c9e0c13 100644
--- a/include/configs/exynos5-dt-common.h
+++ b/include/configs/exynos5-dt-common.h
@@ -15,7 +15,7 @@
 		"stdout=serial,vidconsole\0" \
 		"stderr=serial,vidconsole\0"
 
-#define CONFIG_SYS_SPI_BASE	0x12D30000
+#define CFG_SYS_SPI_BASE	0x12D30000
 #define FLASH_SIZE		(4 << 20)
 #define CONFIG_SPI_BOOTING