dt-bindings: clock: add RMII clock selection

Add RMII clock selection for ENETC0 and ENETC1.

Signed-off-by: Wei Fang <[e-mail]>
Acked-by: Rob Herring (Arm) <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Abel Vesa <[e-mail]>

include/dt-bindings/clock/nxp,imx95-clock.h

···
 #define IMX95_CLK_DISPMIX_ENG0_SEL		0
 #define IMX95_CLK_DISPMIX_ENG1_SEL		1
 
+#define IMX95_CLK_NETCMIX_ENETC0_RMII		0
+#define IMX95_CLK_NETCMIX_ENETC1_RMII		1
+
 #endif	/* __DT_BINDINGS_CLOCK_IMX95_H */