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/ram/aspeed/sdram_ast2500.c b/drivers/ram/aspeed/sdram_ast2500.c
index 141b19b..dc466a8 100644
--- a/drivers/ram/aspeed/sdram_ast2500.c
+++ b/drivers/ram/aspeed/sdram_ast2500.c
@@ -203,7 +203,7 @@
 	u32 test_pattern = 0xdeadbeef;
 	u32 cap_param = SDRAM_CONF_CAP_1024M;
 	u32 refresh_timing_param = DDR4_TRFC;
-	const u32 write_addr_base = CONFIG_SYS_SDRAM_BASE + write_test_offset;
+	const u32 write_addr_base = CFG_SYS_SDRAM_BASE + write_test_offset;
 
 	for (ram_size = SDRAM_MAX_SIZE; ram_size > SDRAM_MIN_SIZE;
 	     ram_size >>= 1) {
@@ -231,7 +231,7 @@
 			((refresh_timing_param & SDRAM_AC_TRFC_MASK)
 			 << SDRAM_AC_TRFC_SHIFT));
 
-	info->info.base = CONFIG_SYS_SDRAM_BASE;
+	info->info.base = CFG_SYS_SDRAM_BASE;
 	info->info.size = ram_size - ast2500_sdrammc_get_vga_mem_size(info);
 	clrsetbits_le32(&info->regs->config,
 			(SDRAM_CONF_CAP_MASK << SDRAM_CONF_CAP_SHIFT),