staging: iio: resolver: ad2s1210: Change type in printf format string

Wrong type in printf format string, requires 'int'
but the argument type is 'unsigned int'

This was found using a static code analysis program called cppcheck

Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

diff --cc drivers/staging/iio/resolver/ad2s1210.c
Simple merge