loongarch64: set PREEMPT_NONE as default preemption model
Loongarch64 currently uses the PREEMPT_VOLUNTARY model, which is not
aligned with OpenWrt's default. Switch to PREEMPT_NONE for consistency with
OpenWrt's default configuration. Preemption model selection is now
available via menuconfig for further customization.
Signed-off-by: Thomas Richard <[email protected]>
Link: https://github.com/openwrt/openwrt/pull/21413
Signed-off-by: Hauke Mehrtens <[email protected]>
Thomas Richard