staging: comedi: dt9812: Resolve different base types warnings.
staging: comedi: dt9812: Resolve different base types warnings.

Resolves warnings from the "sparse" checker of the form "warning: incorrect
type in assignment (different base types)".

Signed-off-by: Shaun Laing <a2bb892f7d3d0e9e81f56035b4467ebbc2c5d2cd@xresource.ca>
Reviewed-by: Ian Abbott <9e6ba6483b6a3e14d61f7c987e72ecb5b46122d6@mev.co.uk>
Reviewed-by: H Hartley Sweeten <382ff55d8e07d1082d179e669636cd1552da4f36@visionengravers.com>
Signed-off-by: Greg Kroah-Hartman <4645f7897fd33786a2ee1264d590b3c400559d85@linuxfoundation.org>

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