[media] drxk_hard: fix sparse warnings
[media] drxk_hard: fix sparse warnings

drivers/media/dvb-frontends/drxk_hard.c:1086:62: warning: Using plain integer as NULL pointer
drivers/media/dvb-frontends/drxk_hard.c:2784:63: warning: Using plain integer as NULL pointer

Signed-off-by: Hans Verkuil <3a513708f73c27e7d36ebc496aa41dad6a3153ea@cisco.com>
Reviewed-by: Antti Palosaari <293134fe763ce2d9d8609280ea107c73cbd2eb86@iki.fi>
Reviewed-by: Michael Krufky <00524723a60798c74a43fcc620c25dd7b9ece078@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <0cae1d1e981e84d16b82ca3d17be8a7f826608d3@samsung.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs