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/arch/x86/cpu/intel_common/mrc.c b/arch/x86/cpu/intel_common/mrc.c
index c834c05..baa1f0e 100644
--- a/arch/x86/cpu/intel_common/mrc.c
+++ b/arch/x86/cpu/intel_common/mrc.c
@@ -259,7 +259,7 @@
 		return ret;
 
 	delay = dev_read_u32_default(dev, "fspm,training-delay", 0);
-	if (spl_phase() == PHASE_SPL) {
+	if (xpl_phase() == PHASE_SPL) {
 		if (delay)
 			printf("SDRAM training (%d seconds)...", delay);
 		else
diff --git a/arch/x86/cpu/intel_common/p2sb.c b/arch/x86/cpu/intel_common/p2sb.c
index 7aad8f8..406c410 100644
--- a/arch/x86/cpu/intel_common/p2sb.c
+++ b/arch/x86/cpu/intel_common/p2sb.c
@@ -96,7 +96,7 @@
 		return log_msg_ret("Missing/short early-regs", ret);
 	plat->mmio_base = base[0];
 	/* TPL sets up the initial BAR */
-	if (spl_phase() == PHASE_TPL) {
+	if (xpl_phase() == PHASE_TPL) {
 		plat->bdf = pci_get_devfn(dev);
 		if (plat->bdf < 0)
 			return log_msg_ret("Cannot get p2sb PCI address",
@@ -114,9 +114,9 @@
 
 static int p2sb_probe(struct udevice *dev)
 {
-	if (spl_phase() == PHASE_TPL)
+	if (xpl_phase() == PHASE_TPL)
 		return p2sb_early_init(dev);
-	else if (spl_phase() == PHASE_SPL)
+	else if (xpl_phase() == PHASE_SPL)
 		return p2sb_spl_init(dev);
 
 	return 0;