[][MAC80211][hnat][Add a debugging level control to the Roaming feature]

[Description]
Add a debugging level control to the Roaming feature.

We add a debugging level control for printing logs.
- echo [0~7] > /sys/kernel/debug/mtk_ppe/debug_level

Without this patch, the kernel might print annoying messages when
receiving a NETLINK_ROUTE event.

[Release-log]
N/A


Change-Id: I67eb653b341cbefe61d34558f6a2e7538a264cd6
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/9186646
1 file changed