xpl: Rename spl_phase() to xpl_phase()

Rename this function to indicate that it refers to any xPL phase.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/common/spl/spl.c b/common/spl/spl.c
index 9ed9192..6c297eb 100644
--- a/common/spl/spl.c
+++ b/common/spl/spl.c
@@ -441,7 +441,7 @@
  */
 static enum bootstage_id get_bootstage_id(bool start)
 {
-	enum xpl_phase_t phase = spl_phase();
+	enum xpl_phase_t phase = xpl_phase();
 
 	if (IS_ENABLED(CONFIG_TPL_BUILD) && phase == PHASE_TPL)
 		return start ? BOOTSTAGE_ID_START_TPL : BOOTSTAGE_ID_END_TPL;
@@ -476,7 +476,7 @@
 			log_debug("Failed to unstash bootstage: ret=%d\n", ret);
 	}
 	bootstage_mark_name(get_bootstage_id(true),
-			    spl_phase_name(spl_phase()));
+			    spl_phase_name(xpl_phase()));
 #if CONFIG_IS_ENABLED(LOG)
 	ret = log_init();
 	if (ret) {
@@ -493,7 +493,7 @@
 	}
 	if (CONFIG_IS_ENABLED(DM)) {
 		bootstage_start(BOOTSTAGE_ID_ACCUM_DM_SPL,
-				spl_phase() == PHASE_TPL ? "dm tpl" : "dm_spl");
+				xpl_phase() == PHASE_TPL ? "dm tpl" : "dm_spl");
 		/* With CONFIG_SPL_OF_PLATDATA, bring in all devices */
 		ret = dm_init_and_scan(!CONFIG_IS_ENABLED(OF_PLATDATA));
 		bootstage_accum(BOOTSTAGE_ID_ACCUM_DM_SPL);