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/usb_a9263.h b/include/configs/usb_a9263.h
index d2fd23e..657dbad 100644
--- a/include/configs/usb_a9263.h
+++ b/include/configs/usb_a9263.h
@@ -17,8 +17,8 @@
 #include <asm/hardware.h>
 
 /* ARM asynchronous clock */
-#define CONFIG_SYS_AT91_MAIN_CLOCK	12000000	/* 12 MHz crystal */
-#define CONFIG_SYS_AT91_SLOW_CLOCK	32768
+#define CFG_SYS_AT91_MAIN_CLOCK	12000000	/* 12 MHz crystal */
+#define CFG_SYS_AT91_SLOW_CLOCK	32768
 
 /*
  * Hardware drivers
@@ -28,8 +28,8 @@
 #define CFG_SYS_SDRAM_BASE		ATMEL_BASE_CS1
 #define CFG_SYS_SDRAM_SIZE		0x04000000
 
-#define CONFIG_SYS_INIT_RAM_SIZE	(16 * 1024)
-#define CONFIG_SYS_INIT_RAM_ADDR	ATMEL_BASE_SRAM1
+#define CFG_SYS_INIT_RAM_SIZE	(16 * 1024)
+#define CFG_SYS_INIT_RAM_ADDR	ATMEL_BASE_SRAM1
 
 /* NAND flash */
 #ifdef CONFIG_CMD_NAND