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/malta.h b/include/configs/malta.h
index c9aee00..65f4b05 100644
--- a/include/configs/malta.h
+++ b/include/configs/malta.h
@@ -28,7 +28,7 @@
 #endif
 #define CFG_SYS_SDRAM_SIZE		0x10000000	/* 256 MiB */
 
-#define CONFIG_SYS_INIT_SP_OFFSET	0x400000
+#define CFG_SYS_INIT_SP_OFFSET	0x400000
 
 /*
  * Serial driver
@@ -38,9 +38,9 @@
  * Flash configuration
  */
 #ifdef CONFIG_64BIT
-# define CONFIG_SYS_FLASH_BASE		0xffffffffbe000000
+# define CFG_SYS_FLASH_BASE		0xffffffffbe000000
 #else
-# define CONFIG_SYS_FLASH_BASE		0xbe000000
+# define CFG_SYS_FLASH_BASE		0xbe000000
 #endif
 
 /*