UBUNTU: SAUCE: rtw88: pci: enable MSI interrupt

UBUNTU: SAUCE: rtw88: pci: enable MSI interrupt

BugLink: https://bugs.launchpad.net/bugs/1838133
MSI interrupt should be enabled on certain platform.

Add a module parameter disable_msi to disable MSI interrupt,
driver will then use legacy interrupt instead.

One could rebind the PCI device, probe() will pick up the
new value of the module parameter. Such as:

    echo '0000:01:00.0' > /sys/bus/pci/drivers/rtw_pci/unbind
    echo '0000:01:00.0' > /sys/bus/pci/drivers/rtw_pci/bind

Tested-by: Ján Veselý <jano.vesely@gmail.com>
Reviewed-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Yu-Yen Ting <steventing@realtek.com>
Signed-off-by: Yan-Hsuan Chuang <yhchuang@realtek.com>
Link: https://lore.kernel.org/linux-wireless/1565166487-22048-1-git-send-email-yhchuang@realtek.com/
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: Seth Forshee <seth.forshee@canonical.com>