[][kernel][mt7986][eth][Change GMAC0/1 DTS configuratoin for HSGMII]

[Description]
Change GMAC0/1 DTS configuratoin for HSGMII.

1. Change GMAC0/1 DTS configuration to phy-handle.
2. Change PHY reset to bus level reset.

[Release-log]
N/A

Change-Id: I3b59f4e62aa5d2348f229047624db4a298785ff3
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/6376188
diff --git a/target/linux/mediatek/mt7986/config-5.4 b/target/linux/mediatek/mt7986/config-5.4
index b4eef30..eb9070e 100644
--- a/target/linux/mediatek/mt7986/config-5.4
+++ b/target/linux/mediatek/mt7986/config-5.4
@@ -293,6 +293,7 @@
 CONFIG_LZO_DECOMPRESS=y
 CONFIG_MAGIC_SYSRQ=y
 CONFIG_MAGIC_SYSRQ_SERIAL=y
+CONFIG_MAXLINEAR_GPHY=y
 CONFIG_MD=y
 CONFIG_MDIO_BUS=y
 CONFIG_MDIO_DEVICE=y