iio: proximity: sx9500: Fix proximity value
iio: proximity: sx9500: Fix proximity value

Because of the ABI confusion proximity value exposed by SX9500
was inverted.

Signed-off-by: Daniel Baluta <f45a6396254d0683f1df8e14b691f61d753fe117@intel.com>
Reviewed-by: Vlad Dogaru <8a8090b76fed5957d83ed04f662034969f51e57f@intel.com>
Cc: <d96e5b2dd07c1733b2b013bd82922c22baade37d@vger.kernel.org>
Signed-off-by: Jonathan Cameron <09f65b71b7655725897b2fd41a09a0cefe2e1ace@kernel.org>

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