dt-bindings: trivial-devices: add Astera Labs PT5161L

Add dt-bindings for pt5161l temperature monitoring.
Signed-off-by: Cosmo Chou <chou.cosmo@gmail.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20240115100518.2887549-3-chou.cosmo@gmail.comSigned-off-by: Guenter Roeck <linux@roeck-us.net>

Documentation/devicetree/bindings/trivial-devices.yaml

@@ -47,6 +47,8 @@ properties:
           - adi,lt7182s
             # AMS iAQ-Core VOC Sensor
           - ams,iaq-core
+            # Temperature monitoring of Astera Labs PT5161L PCIe retimer
+          - asteralabs,pt5161l
             # i2c serial eeprom (24cxx)
           - at,24c08
             # ATSHA204 - i2c h/w symmetric crypto module