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/init.h b/include/init.h
index d40d11f..699dc24 100644
--- a/include/init.h
+++ b/include/init.h
@@ -90,8 +90,8 @@
  *
  * If this is not provided, a default implementation will try to set up a
  * single bank. It will do this if CONFIG_NR_DRAM_BANKS and
- * CONFIG_SYS_SDRAM_BASE are set. The bank will have a start address of
- * CONFIG_SYS_SDRAM_BASE and the size will be determined by a call to
+ * CFG_SYS_SDRAM_BASE are set. The bank will have a start address of
+ * CFG_SYS_SDRAM_BASE and the size will be determined by a call to
  * get_effective_memsize().
  *
  * Return: 0 if OK, -ve on error