dt-bindings: memory-controllers: ti,gpmc: fix typo in description

Fix typo where 'GPMC driver implements an interrupt controller' instead of
'and interrupt controller'

Signed-off-by: Colin Foster <colin.foster@in-advantage.com>
Link: https://lore.kernel.org/r/20221222182309.575069-1-colin.foster@in-advantage.com


Signed-off-by: Rob Herring <robh@kernel.org>