global: Use CONFIG_XPL_BUILD instead of CONFIG_SPL_BUILD

Complete this rename for all directories outside arch/ board/ drivers/
and include/

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/test/Makefile b/test/Makefile
index ed312cd..f801d87 100644
--- a/test/Makefile
+++ b/test/Makefile
@@ -25,7 +25,7 @@
 obj-$(CONFIG_UT_TIME) += time_ut.o
 obj-y += ut.o
 
-ifeq ($(CONFIG_SPL_BUILD),)
+ifeq ($(CONFIG_XPL_BUILD),)
 obj-y += boot/
 obj-$(CONFIG_UNIT_TEST) += common/
 obj-y += log/
diff --git a/test/cmd_ut.c b/test/cmd_ut.c
index 38ba89e..53fddeb 100644
--- a/test/cmd_ut.c
+++ b/test/cmd_ut.c
@@ -256,7 +256,7 @@
 	"\ntime - very basic test of time functions"
 #endif
 #if defined(CONFIG_UT_UNICODE) && \
-	!defined(CONFIG_SPL_BUILD) && !defined(API_BUILD)
+	!defined(CONFIG_XPL_BUILD) && !defined(API_BUILD)
 	"\nunicode - Unicode functions"
 #endif
 	);
diff --git a/test/dm/Makefile b/test/dm/Makefile
index c12589d..c6c6305 100644
--- a/test/dm/Makefile
+++ b/test/dm/Makefile
@@ -7,7 +7,7 @@
 
 # Tests for particular subsystems - when enabling driver model for a new
 # subsystem you must add sandbox tests here.
-ifeq ($(CONFIG_SPL_BUILD),y)
+ifeq ($(CONFIG_XPL_BUILD),y)
 obj-$(CONFIG_SPL_OF_PLATDATA) += of_platdata.o
 else
 obj-$(CONFIG_UT_DM) += bus.o
diff --git a/test/lib/Makefile b/test/lib/Makefile
index 70f14c4..a54387a 100644
--- a/test/lib/Makefile
+++ b/test/lib/Makefile
@@ -2,7 +2,7 @@
 #
 # (C) Copyright 2018
 # Mario Six, Guntermann & Drunck GmbH, mario.six@gdsys.cc
-ifeq ($(CONFIG_SPL_BUILD),)
+ifeq ($(CONFIG_XPL_BUILD),)
 obj-y += cmd_ut_lib.o
 obj-y += abuf.o
 obj-y += alist.o
diff --git a/test/test-main.c b/test/test-main.c
index b3d3e24..479dbb3 100644
--- a/test/test-main.c
+++ b/test/test-main.c
@@ -47,7 +47,7 @@
 static enum fdtchk_t fdt_action(void)
 {
 	/* For sandbox SPL builds, do nothing */
-	if (IS_ENABLED(CONFIG_SANDBOX) && IS_ENABLED(CONFIG_SPL_BUILD))
+	if (IS_ENABLED(CONFIG_SANDBOX) && IS_ENABLED(CONFIG_XPL_BUILD))
 		return FDTCHK_NONE;
 
 	/* Do a copy for sandbox (but only the U-Boot build, not SPL) */