dt-bindings: trivial-devices: Add infineon,irps5401

Add Infineon IRPS5401 power supply to trivial devices. Driver has been
added long time ago by commit 9158411b ("hwmon: (pmbus) Add Infineon
IRPS5401 driver").
Signed-off-by: Michal Simek <michal.simek@amd.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/9673fc919c6785879975fb1830d5026d3cfa658a.1686233049.git.michal.simek@amd.comSigned-off-by: Rob Herring <robh@kernel.org>

Documentation/devicetree/bindings/trivial-devices.yaml

@@ -139,6 +139,8 @@ properties:
           - infineon,ir38164
             # Infineon IR38263 Voltage Regulator
           - infineon,ir38263
+            # Infineon IRPS5401 Voltage Regulator (PMIC)
+          - infineon,irps5401
             # Infineon SLB9635 (Soft-) I2C TPM (old protocol, max 100khz)
           - infineon,slb9635tt
             # Infineon SLB9645 I2C TPM (new protocol, max 400khz)