mei: pxp: Keep a const qualifier when calling mei_cldev_send()

The API has been fixed in commit 0912ef48 ("mei: constify passed
buffers and structures"), so there is no more need to drop the const
qualifier and the comment can be removed as-well.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/23c078181575e65ff660f993bc6eb38753b3d5e7.1689971167.git.christophe.jaillet@wanadoo.fr


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>