board: Use CONFIG_XPL_BUILD instead of CONFIG_SPL_BUILD

Use the new symbol to refer to any 'SPL' build, including TPL and VPL

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/board/freescale/ls1088a/ddr.c b/board/freescale/ls1088a/ddr.c
index 54b432a..cd590af 100644
--- a/board/freescale/ls1088a/ddr.c
+++ b/board/freescale/ls1088a/ddr.c
@@ -13,7 +13,7 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
-#if defined(CONFIG_VID) && (!defined(CONFIG_SPL) || defined(CONFIG_SPL_BUILD))
+#if defined(CONFIG_VID) && (!defined(CONFIG_SPL) || defined(CONFIG_XPL_BUILD))
 static void fsl_ddr_setup_0v9_volt(memctl_options_t *popts)
 {
 	int vdd;
@@ -101,7 +101,7 @@
 	popts->addr_hash = 1;
 
 	popts->ddr_cdr1 = DDR_CDR1_DHC_EN | DDR_CDR1_ODT(DDR_CDR_ODT_60ohm);
-#if defined(CONFIG_VID) && (!defined(CONFIG_SPL) || defined(CONFIG_SPL_BUILD))
+#if defined(CONFIG_VID) && (!defined(CONFIG_SPL) || defined(CONFIG_XPL_BUILD))
 	fsl_ddr_setup_0v9_volt(popts);
 #endif
 
@@ -124,7 +124,7 @@
 {
 	puts("Initializing DDR....using SPD\n");
 
-#if defined(CONFIG_SPL) && !defined(CONFIG_SPL_BUILD)
+#if defined(CONFIG_SPL) && !defined(CONFIG_XPL_BUILD)
 	gd->ram_size = fsl_ddr_sdram_size();
 #else
 	gd->ram_size = fsl_ddr_sdram();