package/python-pillow: enable host variant
This commit enables the host variant of the python-pillow package, as
it is needed as a dependency to build some specific versions of
OP-TEE.
Signed-off-by: Kory Maincent <kory.maincent@bootlin.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>