[][Add NETSYS reset flow for Panther/Cheetah]

[Description]
Add NETSYS reset flow for Panther/Cheetah.
This patch includes below changes:
	- FE warm reset
	- FE cold reset
	- HNAT warm reset
	- FE/HNAT/JEDI/WARP reset notifier
	- FE error interrupt ISR
	- QDMA/WDMA/ADMA hang detector

[Usage]
- Command:
	cat /proc/mtketh/reset_event
- Description:
	Dump counters for all the reset reasons(TSO/RFIFO/FORCE...)

[Release-log]
N/A

Change-Id: I2b4d52ae3644ee4d7117f118422fffd1c29ec0a7
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/5829085
10 files changed