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/imgtec/malta/lowlevel_init.S b/board/imgtec/malta/lowlevel_init.S
index bed2497..aa910bf 100644
--- a/board/imgtec/malta/lowlevel_init.S
+++ b/board/imgtec/malta/lowlevel_init.S
@@ -118,7 +118,7 @@
 	/* setup basic address decode */
 	PTR_LI	t0, CKSEG1ADDR(MALTA_MSC01_BIU_BASE)
 	li	t1, 0x0
-	li	t2, -CONFIG_SYS_SDRAM_SIZE
+	li	t2, -CFG_SYS_SDRAM_SIZE
 	sw	t1, MSC01_BIU_MCBAS1L_OFS(t0)
 	sw	t2, MSC01_BIU_MCMSK1L_OFS(t0)
 	sw	t1, MSC01_BIU_MCBAS2L_OFS(t0)
@@ -168,7 +168,7 @@
 	sw	t3, MSC01_PCI_SC2PIOMAPL_OFS(t0)
 
 	/* setup PCI_BAR0 memory window */
-	li	t1, -CONFIG_SYS_SDRAM_SIZE
+	li	t1, -CFG_SYS_SDRAM_SIZE
 	sw	t1, MSC01_PCI_BAR0_OFS(t0)
 
 	/* setup PCI to SysCon/CPU translation */