spi: dt-bindings: renesas,rspi: Drop comment for generic compatible string

Drop comment "# RZ/A and RZ/G2{L,LC}" for generic compatible string
"renesas,rspi-rz" as this will avoid changing the line for every new SoC
addition.
Suggested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Link: https://lore.kernel.org/r/20220301134244.20174-1-prabhakar.mahadev-lad.rj@bp.renesas.comSigned-off-by: Mark Brown <broonie@kernel.org>

Documentation/devicetree/bindings/spi/renesas,rspi.yaml

@@ -23,7 +23,7 @@ properties:
               - renesas,rspi-r7s9210   # RZ/A2
               - renesas,r9a07g044-rspi # RZ/G2{L,LC}
               - renesas,r9a07g054-rspi # RZ/V2L
-          - const: renesas,rspi-rz     # RZ/A and RZ/G2{L,LC}
+          - const: renesas,rspi-rz
 
       - items:
           - enum: