ARM: footbridge: remove personal server platform

mainline inclusion
from mainline-v5.13-rc1
commit 298a58e1
category: bugfix
bugzilla: NA
CVE: CVE-2021-32078

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

Remove the personal server platform, as that has had an array overrun
issue identified. It is believed that no one is using this code.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Conflicts:
  arch/arm/mach-footbridge/Kconfig
  arch/arm/mach-footbridge/personal-pci.c
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Reviewed-by: Xiu Jianfeng <xiujianfeng@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>