[][kernel][common][eth][Change heartbeat check cycle for Aquantia firwmare download]

[Description]
Change heartbeat check cycle to 2 seconds.

If without this patch, the heartbeat check thread might false alarm.

[Release-log]
N/A


Change-Id: I6bc49be93288417f32e1987945f0a7b96a57054a
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/7286911
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 7a9f229..28248f4 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
@@ -1066,7 +1066,7 @@
 +		}
 +
 +		set_current_state(TASK_INTERRUPTIBLE);
-+		schedule_timeout(HZ);
++		schedule_timeout(2 * HZ);
 +	}
 +
 +	return ret;