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/arch/arm/mach-mvebu/alleycat5/cpu.c b/arch/arm/mach-mvebu/alleycat5/cpu.c
index cc7f979..8204d96 100644
--- a/arch/arm/mach-mvebu/alleycat5/cpu.c
+++ b/arch/arm/mach-mvebu/alleycat5/cpu.c
@@ -21,8 +21,8 @@
 static struct mm_region ac5_mem_map[] = {
 	{
 		/* RAM */
-		.phys = CONFIG_SYS_SDRAM_BASE,
-		.virt = CONFIG_SYS_SDRAM_BASE,
+		.phys = CFG_SYS_SDRAM_BASE,
+		.virt = CFG_SYS_SDRAM_BASE,
 		.attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
 			 PTE_BLOCK_INNER_SHARE
 	},
@@ -102,7 +102,7 @@
 	/*
 	 * Config single DRAM bank
 	 */
-	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 = gd->ram_size;
 
 	return 0;