security: fix security issues about mem corruption and info leakage

security: fix security issues about mem corruption and info leakage

PD#150578: kernel4.9 secure review issues
1. Kernel Debugging Options Enabled

2. Exploit Mitigations (KASLR, Stack Protector)
   Not Enabled In Kernel Config

3. Buffer Overflow in Amvideo Driver file_name
   SysFS Attribute

4. Memory Corruption in VFM Driver SysFS Attribute

5. Kernel Syslog Accessible To  Unprivileged Users

6. Kernel Memory Corruption in EFuse Driver

7. Kernel Memory Corruption in Unifykey IOCTL

Change-Id: I277c449f4cb14141bf37f90fd66764b8dccaaee0
Signed-off-by: Jiamin Ma <jiamin.ma@amlogic.com>