arch: 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/arch/arm/mach-mvebu/include/mach/soc.h b/arch/arm/mach-mvebu/include/mach/soc.h
index dc68d40..495530d 100644
--- a/arch/arm/mach-mvebu/include/mach/soc.h
+++ b/arch/arm/mach-mvebu/include/mach/soc.h
@@ -36,7 +36,7 @@
 /* SOC specific definations */
 #define INTREG_BASE		0xd0000000
 #define INTREG_BASE_ADDR_REG	(INTREG_BASE + 0x20080)
-#if defined(CONFIG_SPL_BUILD) || defined(CONFIG_ARMADA_3700)
+#if defined(CONFIG_XPL_BUILD) || defined(CONFIG_ARMADA_3700)
 /*
  * The SPL U-Boot version still runs with the default
  * address for the internal registers, configured by