regmap: irq: cleanup comments

Replace the second 'which' with 'the'.
Change 'acknowleding' to 'acknowledging'.

Signed-off-by: Tom Rix <trix@redhat.com>
Link: https://lore.kernel.org/r/20220212143144.2648689-1-trix@redhat.com


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