[][kernel][common][eth][Add gangload timeout mechanism for the Aquantia PHY driver]

[Description]
Add gangload timeout mechanism for the Aquantia PHY driver.

Without this patch, the gangload mode cannot download firmware into
Aquantia 10G PHY when the board only has one 10G PHY IC.

[Release-log]
N/A


Change-Id: Iedfc443b0bdc1b7c3368a64c470434735634dae1
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/7760277
1 file changed