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/common/board_f.c b/common/board_f.c
index e6117a7..aab1130 100644
--- a/common/board_f.c
+++ b/common/board_f.c
@@ -329,12 +329,12 @@
 /* Get the top of usable RAM */
 __weak phys_size_t board_get_usable_ram_top(phys_size_t total_size)
 {
-#if defined(CONFIG_SYS_SDRAM_BASE) && CONFIG_SYS_SDRAM_BASE > 0
+#if defined(CFG_SYS_SDRAM_BASE) && CFG_SYS_SDRAM_BASE > 0
 	/*
 	 * Detect whether we have so much RAM that it goes past the end of our
 	 * 32-bit address space. If so, clip the usable RAM so it doesn't.
 	 */
-	if (gd->ram_top < CONFIG_SYS_SDRAM_BASE)
+	if (gd->ram_top < CFG_SYS_SDRAM_BASE)
 		/*
 		 * Will wrap back to top of 32-bit space when reservations
 		 * are made.
@@ -369,8 +369,8 @@
 	 */
 	gd->ram_size -= CONFIG_SYS_MEM_TOP_HIDE;
 #endif
-#ifdef CONFIG_SYS_SDRAM_BASE
-	gd->ram_base = CONFIG_SYS_SDRAM_BASE;
+#ifdef CFG_SYS_SDRAM_BASE
+	gd->ram_base = CFG_SYS_SDRAM_BASE;
 #endif
 	gd->ram_top = gd->ram_base + get_effective_memsize();
 	gd->ram_top = board_get_usable_ram_top(gd->mon_len);