iio: adc: qcom-spmi-adc5: Fix the channel name

iio: adc: qcom-spmi-adc5: Fix the channel name

commit 701c875aded880013aacac608832995c4b052257 upstream.

The node name can contain an address part which is unused
by the driver. Moreover, this string is propagated into
the userspace label, sysfs filenames *and breaking ABI*.

Cut the address part out before assigning the channel name.

Fixes: 4f47a236a23d ("iio: adc: qcom-spmi-adc5: convert to device properties")
Reported-by: Marijn Suijten <marijn.suijten@somainline.org>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Marijn Suijten <marijn.suijten@somainline.org>
Link: https://lore.kernel.org/r/20230118100623.42255-1-andriy.shevchenko@linux.intel.com
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>