regulator: pf9453: add PMIC PF9453 support

Support new PMIC PF9453, which is totally difference with PCA9450. So
create new file for it.

The PF9453 is a single chip Power Management IC (PMIC) specifically
designed for i.MX 91 processor. It provides power supply solutions for IoT
(Internet of Things), smart appliance, and portable applications where size
and efficiency are critical. The device provides four high efficiency
step-down regulators, three LDOs, one 400 mA load switch and 32.768 kHz
crystal oscillator driver.

Signed-off-by: Joy Zou <joy.zou@nxp.com>
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Link: https://patch.msgid.link/20250314-pf9453-v5-2-ab0cf1f871b0@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>

drivers/regulator/Kconfig

@@ -981,6 +981,13 @@ config REGULATOR_PCA9450
 	  Say y here to support the NXP PCA9450A/PCA9450B/PCA9450C PMIC
 	  regulator driver.
 
+config REGULATOR_PF9453
+	tristate "NXP PF9453 regulator driver"
+	depends on I2C
+	select REGMAP_I2C
+	help
+	  Say y here to support the NXP PF9453 PMIC regulator driver.
+
 config REGULATOR_PCAP
 	tristate "Motorola PCAP2 regulator driver"
 	depends on EZX_PCAP

drivers/regulator/Makefile

@@ -123,6 +123,7 @@ obj-$(CONFIG_REGULATOR_QCOM_SPMI) += qcom_spmi-regulator.o
 obj-$(CONFIG_REGULATOR_QCOM_USB_VBUS) += qcom_usb_vbus-regulator.o
 obj-$(CONFIG_REGULATOR_PALMAS) += palmas-regulator.o
 obj-$(CONFIG_REGULATOR_PCA9450) += pca9450-regulator.o
+obj-$(CONFIG_REGULATOR_PF9453) += pf9453-regulator.o
 obj-$(CONFIG_REGULATOR_PF8X00) += pf8x00-regulator.o
 obj-$(CONFIG_REGULATOR_PFUZE100) += pfuze100-regulator.o
 obj-$(CONFIG_REGULATOR_PV88060) += pv88060-regulator.o