tools/x86/kcpuid: Add AMD Secure Encryption leaf

Add the 0x8000001f leaf's fields.

Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Feng Tang <feng.tang@intel.com>
Link: https://lkml.kernel.org/r/20210313140118.17010-1-bp@alien8.de