[][kernel][common][eth][Fix Aquantia PHY setting loss issue for firwmare download]

[Description]
Fix Aquantia PHY setting loss issue for firmware download.

The firmware download task will re-configure PHY setting when
firmware download completed.
If without this delay loop, the re-configured setting might be
overwritten by firmware.

[Release-log]
N/A


Change-Id: Ifa33d19acdeaa21b8a2f8daab77332af00379b49
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/6924559
diff --git a/target/linux/mediatek/patches-5.4/751-net-phy-aquantia-add-firmware-download.patch b/target/linux/mediatek/patches-5.4/751-net-phy-aquantia-add-firmware-download.patch
index c3386de..ff3b383 100644
--- a/target/linux/mediatek/patches-5.4/751-net-phy-aquantia-add-firmware-download.patch
+++ b/target/linux/mediatek/patches-5.4/751-net-phy-aquantia-add-firmware-download.patch
@@ -1058,9 +1058,9 @@
 +		}
 +	}
 +
-+#ifdef CONFIG_AQUANTIA_PHY_MDI_SWAP
++	/* wait firmware initialization completed */
 +	mdelay(250);
-+#endif
++
 +	for (i = 0; i < num_phydevs; i++) {
 +		if (result[i] == 0) {
 +			priv = phydevs[i]->priv;