UBUNTU: SAUCE: LSM: Use lsmblob in security_inode_getsecid

UBUNTU: SAUCE: LSM: Use lsmblob in security_inode_getsecid

Change the security_inode_getsecid() interface to fill in a
lsmblob structure instead of a u32 secid. This allows for its
callers to gather data from all registered LSMs. Data is provided
for IMA and audit.

Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: John Johansen <john.johansen@canonical.com>
Signed-off-by: Casey Schaufler <casey@schaufler-ca.com>
Acked-by: Stephen Smalley <sds@tycho.nsa.gov>
cc: linux-integrity@vger.kernel.org
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-by: Andrea Righi <andrea.righi@canonical.com>
[ saf: resolve conflicts ]
Signed-off-by: Seth Forshee <seth.forshee@canonical.com>