buildroot

dmraid: bump version to 1.0.0.rc16-3

dmraid rc15 does not support later Intel Software RAID (isw) chipsets
correctly. Updating dmraid to a later edition fixes this issue.

Also cleanup and remove now useless patches.

Signed-off-by: Maxime Hadjinlian <maxime.hadjinlian@gmail.com>
Cc: Antony Vennard <arv@vx9.co.uk>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>