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/ge/b1x5v2/b1x5v2.c b/board/ge/b1x5v2/b1x5v2.c
index 031773b..c1aacd1 100644
--- a/board/ge/b1x5v2/b1x5v2.c
+++ b/board/ge/b1x5v2/b1x5v2.c
@@ -35,7 +35,7 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
-#ifndef CONFIG_SPL_BUILD
+#ifndef CONFIG_XPL_BUILD
 
 #define B1X5V2_GE_VPD_OFFSET	0x0100000
 #define B1X5V2_GE_VPD_SIZE	1022
@@ -695,4 +695,4 @@
        ""
 );
 
-#endif // CONFIG_SPL_BUILD
+#endif // CONFIG_XPL_BUILD