mfd: intel_soc_pmic_bxtwc: Deduplicate error messages

Move the individual error messages inside bxtwc_add_chained_irq_chip()
in order to deduplicate them.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20241016105201.757024-5-andriy.shevchenko@linux.intel.com


Signed-off-by: Lee Jones <lee@kernel.org>