Bluetooth: btmrvl_sdio: Refactor irq wakeup

[ Upstream commit e660b3510eb4b3c06ce1188a1d305b6f653106fc ]

Use device_init_wakeup to allow the Bluetooth dev to wake the system
from suspend. Currently, the device can wake the system but no
power/wakeup entry is created in sysfs to allow userspace to disable
wakeup.

Signed-off-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Stable-dep-of: 7b1ab460592c ("Bluetooth: btmrvl: Use IRQF_NO_AUTOEN flag in request_irq()")
Signed-off-by: Sasha Levin <sashal@kernel.org>