spi: omap2-mcspi: remove redundant dev_err_probe()

When platform_get_irq() is called, the error message has been printed,
so it need not to call dev_err_probe() to print error, we remove the
redundant platform_get_irq().

Signed-off-by: Zhu Wang <wangzhu9@huawei.com>
Link: https://lore.kernel.org/r/20230801135442.255604-1-wangzhu9@huawei.com


Signed-off-by: Mark Brown <broonie@kernel.org>