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>

doc/arch/m68k.rst

@@ -142,21 +142,21 @@ CONFIG_SYS_CACHE_DCACR:
   cache-related registers config
 CONFIG_SYS_CACHE_ACRX:
   cache-related registers config
-CONFIG_SYS_SDRAM_BASE:
+CFG_SYS_SDRAM_BASE:
   SDRAM config for SDRAM controller-specific registers
-CONFIG_SYS_SDRAM_SIZE:
+CFG_SYS_SDRAM_SIZE:
   SDRAM config for SDRAM controller-specific registers
-CONFIG_SYS_SDRAM_BASEX:
+CFG_SYS_SDRAM_BASEX:
   SDRAM config for SDRAM controller-specific registers
-CONFIG_SYS_SDRAM_CFG1:
+CFG_SYS_SDRAM_CFG1:
   SDRAM config for SDRAM controller-specific registers
-CONFIG_SYS_SDRAM_CFG2:
+CFG_SYS_SDRAM_CFG2:
   SDRAM config for SDRAM controller-specific registers
-CONFIG_SYS_SDRAM_CTRL:
+CFG_SYS_SDRAM_CTRL:
   SDRAM config for SDRAM controller-specific registers
-CONFIG_SYS_SDRAM_MODE:
+CFG_SYS_SDRAM_MODE:
   SDRAM config for SDRAM controller-specific registers
-CONFIG_SYS_SDRAM_EMOD:
+CFG_SYS_SDRAM_EMOD:
   SDRAM config for SDRAM controller-specific registers, please
   see arch/m68k/cpu/<specific_cpu>/start.S files to see how
   these options are used.

doc/arch/nios2.rst

@@ -96,8 +96,8 @@ to 0xDxxx_xxxx.
 
 .. code-block:: c
 
-   #define CONFIG_SYS_SDRAM_BASE		0xc8000000
-   #define CONFIG_SYS_SDRAM_SIZE		0x08000000
+   #define CFG_SYS_SDRAM_BASE		0xc8000000
+   #define CFG_SYS_SDRAM_SIZE		0x08000000
 
 You will need to change the environment variables location and setting,
 too. You may change other configs to fit your board.