Linux 4.19.84

Merge 169 patches from 4.19.84 stable
branch (170 total) beside 1 already merged patches:
f2bab3ed RDMA/hns: Prevent memory leaks of eq->buf_list
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>

Makefile

 # SPDX-License-Identifier: GPL-2.0
 VERSION = 4
 PATCHLEVEL = 19
-SUBLEVEL = 83
+SUBLEVEL = 84
 EXTRAVERSION =
 NAME = "People's Front"