Linux 4.19.49

Merge 74 patches from 4.19.49 stable
branch (74 total) beside 0 already merged patches.
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>

Makefile

 # SPDX-License-Identifier: GPL-2.0
 VERSION = 4
 PATCHLEVEL = 19
-SUBLEVEL = 48
+SUBLEVEL = 49
 EXTRAVERSION =
 NAME = "People's Front"