Reapply "selinux: add permission checks for loading other kinds of kernel files"

This reverts commit 7a34c697.

The platform policy has been updated to support these new access
vectors.

Bug: 410519913
Bug: 410679099
Cc: Jeff Vander Stoep <jeffv@google.com>
Cc: Carlos Llamas <cmllamas@google.com>
Change-Id: If75d61d60ee93a7b87f00171794d3e182a04856c
Signed-off-by: Thiébaud Weksteen <tweek@google.com>