dt-bindings: net: dwmac: sti: remove stih415/sti416/stid127

Remove compatible for stih415/stih416 and stid127 which are
no more supported.

Signed-off-by: Alain Volmat <avolmat@me.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Link: https://lore.kernel.org/r/20230416195857.61284-1-avolmat@me.com
Signed-off-by: Rob Herring <robh@kernel.org>

Author: Alain Volmat

Documentation/devicetree/bindings/net/sti-dwmac.txt

@@ -7,8 +7,7 @@ and what is needed on STi platforms to program the stmmac glue logic.
 The device node has following properties.
 
 Required properties:
- - compatible	: Can be "st,stih415-dwmac", "st,stih416-dwmac",
-   "st,stih407-dwmac", "st,stid127-dwmac".
+ - compatible	: "st,stih407-dwmac"
  - st,syscon : Should be phandle/offset pair. The phandle to the syscon node which
    encompases the glue register, and the offset of the control register.
  - st,gmac_en: this is to enable the gmac into a dedicated sysctl control