The mt76x8 series SoCs use the MIPS generic systick timer. Sync the
upstream Ralink systick driver changes and disable it for mt76x8
target to reduce the kernel size.
Signed-off-by: Shiji Yang <yangshiji66@qq.com>
Link: https://github.com/openwrt/openwrt/pull/16844
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>