ARM: 9196/1: spectre-bhb: enable for Cortex-A15

stable inclusion
from stable-4.19.245
commit 0569702c238290924fc1c7c6954258aa4a5fd649
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I5FNPY


CVE: NA

--------------------------------

[ Upstream commit 0dc14aa9 ]

The Spectre-BHB mitigations were inadvertently left disabled for
Cortex-A15, due to the fact that cpu_v7_bugs_init() is not called in
that case. So fix that.

Fixes: b9baf5c8 ("ARM: Spectre-BHB workaround")
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Yongqiang Liu <liuyongqiang13@huawei.com>
Signed-off-by: Laibin Qiu <qiulaibin@huawei.com>