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/ci20.h b/include/configs/ci20.h
index f268dfd..3329c24 100644
--- a/include/configs/ci20.h
+++ b/include/configs/ci20.h
@@ -12,7 +12,7 @@
 /* Memory configuration */
 
 #define CFG_SYS_SDRAM_BASE		0x80000000 /* cached (KSEG0) address */
-#define CONFIG_SYS_INIT_SP_OFFSET	0x400000
+#define CFG_SYS_INIT_SP_OFFSET	0x400000
 
 /* NS16550-ish UARTs */
 #define CFG_SYS_NS16550_CLK		48000000