Linux 4.19.55

Merge 2 patches from 4.19.55 stable
branch (2 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 = 54
+SUBLEVEL = 55
 EXTRAVERSION =
 NAME = "People's Front"