global: Move remaining CONFIG_SYS_SDRAM_* to CFG_SYS_SDRAM_*

The rest of the unmigrated CONFIG symbols in the CONFIG_SYS_SDRAM
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/at91sam9x5ek.h b/include/configs/at91sam9x5ek.h
index 40ea4ed..eb1d1ad 100644
--- a/include/configs/at91sam9x5ek.h
+++ b/include/configs/at91sam9x5ek.h
@@ -20,8 +20,8 @@
  */
 
 /* SDRAM */
-#define CONFIG_SYS_SDRAM_BASE		0x20000000
-#define CONFIG_SYS_SDRAM_SIZE		0x08000000	/* 128 megs */
+#define CFG_SYS_SDRAM_BASE		0x20000000
+#define CFG_SYS_SDRAM_SIZE		0x08000000	/* 128 megs */
 
 /* DataFlash */