dt-bindings: rtc: add Epson RX-8025 and RX-8035

These are supported by the rtc-rx8025 module. RX-8025
also has support in ds1307 due to compatible time registers.

Signed-off-by: Mathew McBride <matt@traverse.com.au>
Reviewed-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20210709044518.28769-3-matt@traverse.com.au

Documentation/devicetree/bindings/rtc/trivial-rtc.yaml

@@ -32,6 +32,9 @@ properties:
       - dallas,ds3232
       # I2C-BUS INTERFACE REAL TIME CLOCK MODULE
       - epson,rx8010
+      # I2C-BUS INTERFACE REAL TIME CLOCK MODULE
+      - epson,rx8025
+      - epson,rx8035
       # I2C-BUS INTERFACE REAL TIME CLOCK MODULE with Battery Backed RAM
       - epson,rx8571
       # I2C-BUS INTERFACE REAL TIME CLOCK MODULE