iio:adc:ad799x: Use BIT() and GENMASK()
iio:adc:ad799x: Use BIT() and GENMASK()

Signed-off-by: Peter Meerwald <a2c19d57d338d8f9d8de092166164455662a8cbe@pmeerw.net>
Acked-by: Lars-Peter Clausen <3318dc5ce3e4fb7c28a0b841b6801c884e1d0896@metafoo.de>
Signed-off-by: Jonathan Cameron <09f65b71b7655725897b2fd41a09a0cefe2e1ace@kernel.org>

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