compat-drivers: refresh alx patch for INTX-MSI issue

chip revsion less than C0 has INTX/MSI issue.
this patch should be removed after the kernel drivers/pci/quirks.c
contains this workaround.

Signed-off-by: xiong <xiong@qca.qualcomm.com>
Signed-off-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
scripts/driver-select: use $BACKUP_EXT everywhere

Signed-off-by: Stefan Kuhn <stefan.kuhn@hispeed.ch>
Signed-off-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>