Stable kernels 5.15.10, 5.10.87, and 5.4.167

Greg Kroah-Hartman has announced the release of the 5.15.10, 5.10.87, and 5.4.167 stable kernels. These are fairlysmall updates, but, unlike yesterday's singleself-test bug fix updates, do contain important fixes throughout the tree; usersshould upgrade.