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/drivers/pci/Kconfig b/drivers/pci/Kconfig
index 22f4995..a3b662f 100644
--- a/drivers/pci/Kconfig
+++ b/drivers/pci/Kconfig
@@ -60,7 +60,7 @@
 	  instead of a physical address (e.g. on MIPS). The PCI core will then remap
 	  the virtual memory base address to a physical address when adding the PCI
 	  region of type PCI_REGION_SYS_MEMORY.
-	  This should only be required on MIPS where CONFIG_SYS_SDRAM_BASE is still
+	  This should only be required on MIPS where CFG_SYS_SDRAM_BASE is still
 	  being used as virtual address.
 
 config PCI_SRIOV