power: pmic: Add NXP PCA9451A PMIC support

PCA9451A uses similar BUCKs and LDO regulators as PCA9450B/C but
has LDO2 and LDO3 removed. So reuse pca9450 PMIC and regulator driver
and add new type for PCA9451A.

Signed-off-by: Ye Li <ye.li@nxp.com>
Reviewed-by: Marek Vasut <marex@denx.de>
diff --git a/drivers/power/regulator/pca9450.c b/drivers/power/regulator/pca9450.c
index fe18693..7ca20d1 100644
--- a/drivers/power/regulator/pca9450.c
+++ b/drivers/power/regulator/pca9450.c
@@ -276,7 +276,8 @@
 
 	type = dev_get_driver_data(dev_get_parent(dev));
 
-	if (type != NXP_CHIP_TYPE_PCA9450A && type != NXP_CHIP_TYPE_PCA9450BC) {
+	if (type != NXP_CHIP_TYPE_PCA9450A && type != NXP_CHIP_TYPE_PCA9450BC &&
+	    type != NXP_CHIP_TYPE_PCA9451A) {
 		debug("Unknown PMIC type\n");
 		return -EINVAL;
 	}
@@ -291,6 +292,14 @@
 			continue;
 		}
 
+		/* PCA9451A uses BUCK3 in dual-phase and don't have LDO2 and LDO3 */
+		if (type == NXP_CHIP_TYPE_PCA9451A &&
+		    (!strcmp(pca9450_reg_data[i].name, "BUCK3") ||
+		    !strcmp(pca9450_reg_data[i].name, "LDO2") ||
+		    !strcmp(pca9450_reg_data[i].name, "LDO3"))) {
+			continue;
+		}
+
 		*plat = pca9450_reg_data[i];
 
 		return 0;