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/vexpress_aemv8.h b/include/configs/vexpress_aemv8.h
index 9a46d50..30c1f50 100644
--- a/include/configs/vexpress_aemv8.h
+++ b/include/configs/vexpress_aemv8.h
@@ -254,9 +254,9 @@
 		BOOTENV
 
 #ifdef CONFIG_TARGET_VEXPRESS64_JUNO
-#define CONFIG_SYS_FLASH_BASE		0x08000000
+#define CFG_SYS_FLASH_BASE		0x08000000
 #else
-#define CONFIG_SYS_FLASH_BASE		(V2M_PA_BASE + 0x0C000000)
+#define CFG_SYS_FLASH_BASE		(V2M_PA_BASE + 0x0C000000)
 #endif
 
 #endif /* __VEXPRESS_AEMV8_H */