feat: security configs

set /proc/sys/kernel/kptr_restrict to 1
set /proc/sys/kernel/dmesg_restrict to 1
Signed-off-by: Nlihongjin <lihongjin1@huawei.com>
Change-Id: I94241b481c2e2c629700485cf1322e56cb4cc53e

services/etc/init.cfg

@@ -8,6 +8,8 @@
             "name" : "pre-init",
             "cmds" : [
                 "write /proc/sys/kernel/sysrq 0",
+                "write /proc/sys/kernel/dmesg_restrict 1",
+                "write /proc/sys/kernel/kptr_restrict 1",
                 "start ueventd",
                 "start watchdog_service",
                 "mkdir /data",