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/imx93_evk.h b/include/configs/imx93_evk.h
index b281466..077a4d8 100644
--- a/include/configs/imx93_evk.h
+++ b/include/configs/imx93_evk.h
@@ -127,7 +127,7 @@
 #define CONFIG_SYS_INIT_RAM_ADDR        0x80000000
 #define CONFIG_SYS_INIT_RAM_SIZE        0x200000
 
-#define CONFIG_SYS_SDRAM_BASE           0x80000000
+#define CFG_SYS_SDRAM_BASE           0x80000000
 #define PHYS_SDRAM                      0x80000000
 #define PHYS_SDRAM_SIZE			0x80000000 /* 2GB DDR */