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/sunxi/board.c b/board/sunxi/board.c
index 961cdcd..824c322 100644
--- a/board/sunxi/board.c
+++ b/board/sunxi/board.c
@@ -281,7 +281,7 @@
 	return 0;
 }
 
-#if defined(CONFIG_NAND_SUNXI) && defined(CONFIG_SPL_BUILD)
+#if defined(CONFIG_NAND_SUNXI) && defined(CONFIG_XPL_BUILD)
 static void nand_pinmux_setup(void)
 {
 	unsigned int pin;
@@ -530,7 +530,7 @@
 #endif
 #endif /* CONFIG_MMC */
 
-#ifdef CONFIG_SPL_BUILD
+#ifdef CONFIG_XPL_BUILD
 
 static void sunxi_spl_store_dram_size(phys_addr_t dram_size)
 {
@@ -641,7 +641,7 @@
 	else
 		printf("Failed to set core voltage! Can't set CPU frequency\n");
 }
-#endif /* CONFIG_SPL_BUILD */
+#endif /* CONFIG_XPL_BUILD */
 
 #ifdef CONFIG_USB_GADGET
 int g_dnl_board_usb_cable_connected(void)