MAINTAINERS: Update 104-QUAD-8 driver maintainers list

Syed Nayyar Waris is no longer available for 104-QUAD-8 driver
maintenance. William Breathitt Gray will continue as the 104-QUAD-8
driver maintainer.

Signed-off-by: William Breathitt Gray <william.gray@linaro.org>
Link: https://lore.kernel.org/r/53ecbe49e48dd142fc19f6436fdbe5b8573c5f9c.1657813472.git.william.gray@linaro.org


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