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/snapper9g45.h b/include/configs/snapper9g45.h
index 9b1cb37..b7aa49c 100644
--- a/include/configs/snapper9g45.h
+++ b/include/configs/snapper9g45.h
@@ -15,16 +15,16 @@
 #include <linux/sizes.h>
 
 /* ARM asynchronous clock */
-#define CONFIG_SYS_AT91_MAIN_CLOCK      12000000 /* from 12 MHz crystal */
-#define CONFIG_SYS_AT91_SLOW_CLOCK	32768
+#define CFG_SYS_AT91_MAIN_CLOCK      12000000 /* from 12 MHz crystal */
+#define CFG_SYS_AT91_SLOW_CLOCK	32768
 
 /* CPU */
 
 /* SDRAM */
 #define CFG_SYS_SDRAM_BASE		ATMEL_BASE_CS6
 #define CFG_SYS_SDRAM_SIZE		(128 * 1024 * 1024) /* 64MB */
-#define CONFIG_SYS_INIT_RAM_SIZE	0x1000
-#define CONFIG_SYS_INIT_RAM_ADDR	ATMEL_BASE_SRAM
+#define CFG_SYS_INIT_RAM_SIZE	0x1000
+#define CFG_SYS_INIT_RAM_ADDR	ATMEL_BASE_SRAM
 
 /* Mem test settings */