video/aperture: optionally match the device in sysfb_disable()

In the Linux kernel, the following vulnerability has been resolved:

video/aperture: optionally match the device in sysfb_disable()

In aperture_remove_conflicting_pci_devices(), we currently only

call sysfb_disable() on vga class devices. This leads to the

following problem when the pimary device is not VGA compatible:

1. A PCI device with a non-VGA class is the boot display

2. That device is probed first and it is not a VGA device so

sysfb_disable() is not called, but the device resources

are freed by aperture_detach_platform_device()

3. Non-primary GPU has a VGA class and it ends up calling sysfb_disable()

4. NULL pointer dereference via sysfb_disable() since the resources

have already been freed by aperture_detach_platform_device() when

it was called by the other device.

Fix this by passing a device pointer to sysfb_disable() and checking

the device to determine if we should execute it or not.

v2: Fix build when CONFIG_SCREEN_INFO is not set

v3: Move device check into the mutex

Drop primary variable in aperture_remove_conflicting_pci_devices()

Drop __init on pci sysfb_pci_dev_is_enabled()