net: designware: meson8b: add g12a compatible

Add support for the Meson G12A dwmac glue compatible needed after Linux 5.12 sync.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
diff --git a/drivers/net/dwmac_meson8b.c b/drivers/net/dwmac_meson8b.c
index 40cd837..ddbaa87 100644
--- a/drivers/net/dwmac_meson8b.c
+++ b/drivers/net/dwmac_meson8b.c
@@ -148,6 +148,7 @@
 
 static const struct udevice_id dwmac_meson8b_ids[] = {
 	{ .compatible = "amlogic,meson-gxbb-dwmac", .data = (ulong)dwmac_setup_gx },
+	{ .compatible = "amlogic,meson-g12a-dwmac", .data = (ulong)dwmac_setup_axg },
 	{ .compatible = "amlogic,meson-axg-dwmac", .data = (ulong)dwmac_setup_axg },
 	{ }
 };