regulator: tps6594-regulator: Add TI TPS65224 PMIC regulators

Add support for TPS65224 regulators (bucks and LDOs) to TPS6594 driver as
they have significant functional overlap. TPS65224 PMIC has 4 buck
regulators and 3 LDOs. BUCK12 can operate in dual phase.
The output voltages are configurable and are meant to supply power to the
main processor and other components.
Signed-off-by: Nirmala Devi Mal Nadar <m.nirmaladevi@ltts.com>
Signed-off-by: Bhargav Raviprakash <bhargav.r@ltts.com>
Reviewed-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/0109018f2fdcc305-3b817569-21b6-42a7-942c-8edbff3848f2-000000@ap-south-1.amazonses.comSigned-off-by: Lee Jones <lee@kernel.org>

drivers/regulator/Kconfig

@@ -1563,13 +1563,15 @@ config REGULATOR_TPS6594
 	depends on MFD_TPS6594 && OF
 	default MFD_TPS6594
 	help
-	  This driver supports TPS6594 voltage regulator chips.
+	  This driver supports TPS6594 series and TPS65224 voltage regulator chips.
 	  TPS6594 series of PMICs have 5 BUCKs and 4 LDOs
 	  voltage regulators.
 	  BUCKs 1,2,3,4 can be used in single phase or multiphase mode.
 	  Part number defines which single or multiphase mode is i used.
 	  It supports software based voltage control
 	  for different voltage domains.
+	  TPS65224 PMIC has 4 BUCKs and 3 LDOs. BUCK12 can be used in dual phase.
+	  All BUCKs and LDOs volatge can be controlled through software.
 
 config REGULATOR_TPS6524X
 	tristate "TI TPS6524X Power regulators"