Add support for Mode Page Policy (0x87) VPD page.


git-svn-id: svn+ssh://svn.freebsd.org/base/head@271311 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f
Revert r269474. Special keyboard combinations should be handled by separate
sysctls.


git-svn-id: svn+ssh://svn.freebsd.org/base/head@271312 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f
Oops, missed piece of r271311.


git-svn-id: svn+ssh://svn.freebsd.org/base/head@271313 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f