net: fec: Add stop mode support on i.MX8DX/i.MX8QP

Add additional machines that requires communication to the SC firmware
to set the GPR bit required for stop mode support.

NXP i.MX8DX (fsl,imx8dx) is a low end version of i.MX8QXP (fsl,imx8qxp),
while NXP i.MX8QP (fsl,imx8qp) is a low end version of i.MX8QM
(fsl,imx8qp).

Signed-off-by: Francesco Dolcini <francesco.dolcini@toradex.com>
Signed-off-by: NipaLocal <nipa@local>

Author: dolcini

drivers/net/ethernet/freescale/fec_main.c

@@ -1334,7 +1334,9 @@ fec_restart(struct net_device *ndev)
 static int fec_enet_ipc_handle_init(struct fec_enet_private *fep)
 {
 	if (!(of_machine_is_compatible("fsl,imx8qm") ||
+	      of_machine_is_compatible("fsl,imx8qp") ||
 	      of_machine_is_compatible("fsl,imx8qxp") ||
+	      of_machine_is_compatible("fsl,imx8dx") ||
 	      of_machine_is_compatible("fsl,imx8dxl")))
 		return 0;