PCI: qcom-ep: Disable IRQs during driver remove

Disable the Global and PERST IRQs during driver remove to avoid getting
spurious IRQs after resource deallocation.

Link: https://lore.kernel.org/r/20220914075350.7992-5-manivannan.sadhasivam@linaro.org


Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>