net: stmmac: rk3588: Allow multiple gmac controller

RK3588(s) can have multiple gmac controllers.
Re-use rk3568 logic to distinguish them.

Fixes: 2f2b60a0 ("net: ethernet: stmmac: dwmac-rk: Add gmac support for rk3588")
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Link: https://lore.kernel.org/r/20221021172422.88534-1-sebastian.reichel@collabora.comSigned-off-by: Paolo Abeni <pabeni@redhat.com>

drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c

@@ -1243,6 +1243,12 @@ static const struct rk_gmac_ops rk3588_ops = {
 	.set_rgmii_speed = rk3588_set_gmac_speed,
 	.set_rmii_speed = rk3588_set_gmac_speed,
 	.set_clock_selection = rk3588_set_clock_selection,
+	.regs_valid = true,
+	.regs = {
+		0xfe1b0000, /* gmac0 */
+		0xfe1c0000, /* gmac1 */
+		0x0, /* sentinel */
+	},
 };
 
 #define RV1108_GRF_GMAC_CON0		0X0900