spl: Rename SPL_TPL_NAME and SPL_TPL_PROMPT

Rename these to use the word PHASE instead.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/include/spl.h b/include/spl.h
index 3fc50cd..269e36b 100644
--- a/include/spl.h
+++ b/include/spl.h
@@ -241,16 +241,16 @@
 /* A string name for SPL or TPL */
 #ifdef CONFIG_XPL_BUILD
 # ifdef CONFIG_TPL_BUILD
-#  define SPL_TPL_NAME	"TPL"
+#  define PHASE_NAME	"TPL"
 # elif defined(CONFIG_VPL_BUILD)
-#  define SPL_TPL_NAME	"VPL"
-# else
-#  define SPL_TPL_NAME	"SPL"
+#  define PHASE_NAME	"VPL"
+# elif defined(CONFIG_SPL_BUILD)
+#  define PHASE_NAME	"SPL"
 # endif
-# define SPL_TPL_PROMPT	SPL_TPL_NAME ": "
+# define PHASE_PROMPT	PHASE_NAME ": "
 #else
-# define SPL_TPL_NAME	""
-# define SPL_TPL_PROMPT	""
+# define PHASE_NAME	""
+# define PHASE_PROMPT	""
 #endif
 
 /**