spi: ppc4xx: Revert "handle irq_of_parse_and_map() errors"

spi: ppc4xx: Revert "handle irq_of_parse_and_map() errors"

The commit had been applied twice as
  0f245463b01e ("spi: ppc4xx: handle irq_of_parse_and_map() errors")
and
  f1011ba20b83 ("spi: ppc4xx: handle irq_of_parse_and_map() errors")

This reverts commit f1011ba20b83da3ee70dcb4a6d9d282a718916fa.

Fixes: f1011ba20b83 ("spi: ppc4xx: handle irq_of_parse_and_map() errors")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://patch.msgid.link/20240902102853.2476165-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>