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/board/ti/j721e/evm.c b/board/ti/j721e/evm.c
index d6e431e..d4e672a 100644
--- a/board/ti/j721e/evm.c
+++ b/board/ti/j721e/evm.c
@@ -71,13 +71,13 @@
 int dram_init_banksize(void)
 {
 	/* Bank 0 declares the memory available in the DDR low region */
-	gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
+	gd->bd->bi_dram[0].start = CFG_SYS_SDRAM_BASE;
 	gd->bd->bi_dram[0].size = 0x80000000;
 	gd->ram_size = 0x80000000;
 
 #ifdef CONFIG_PHYS_64BIT
 	/* Bank 1 declares the memory available in the DDR high region */
-	gd->bd->bi_dram[1].start = CONFIG_SYS_SDRAM_BASE1;
+	gd->bd->bi_dram[1].start = CFG_SYS_SDRAM_BASE1;
 	gd->bd->bi_dram[1].size = 0x80000000;
 	gd->ram_size = 0x100000000;
 #endif