ARM: uniphier: simplify SoC ID get function

Currently, uniphier_get_soc_type() converts the SoC ID (this is
read from the revision register) to an enum symbol to use it for SoC
identification.  Come to think of it, there is no need for the
conversion in the first place.  Using the SoC ID from the register
as-is a straightforward way.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/arch/arm/mach-uniphier/arm32/psci.c b/arch/arm/mach-uniphier/arm32/psci.c
index e668265..65a468d 100644
--- a/arch/arm/mach-uniphier/arm32/psci.c
+++ b/arch/arm/mach-uniphier/arm32/psci.c
@@ -28,13 +28,13 @@
 
 static int uniphier_get_nr_cpus(void)
 {
-	switch (uniphier_get_soc_type()) {
-	case SOC_UNIPHIER_SLD3:
-	case SOC_UNIPHIER_PRO4:
-	case SOC_UNIPHIER_PRO5:
+	switch (uniphier_get_soc_id()) {
+	case UNIPHIER_SLD3_ID:
+	case UNIPHIER_PRO4_ID:
+	case UNIPHIER_PRO5_ID:
 		return 2;
-	case SOC_UNIPHIER_PXS2:
-	case SOC_UNIPHIER_LD6B:
+	case UNIPHIER_PXS2_ID:
+	case UNIPHIER_LD6B_ID:
 		return 4;
 	default:
 		return 1;