ACPI / video: Add HP EliteBook Revolve 810 to the blacklist

On HP EliteBook Revolve 810 the ACPI backlight device doesn't work as
expected. For example when resuming from system sleep, it seems to lose
backlight settings.

Forcing Intel driver fixes the problem so add this machine the ACPI
video detect blacklist.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Merge branch 'acpi-video' into bleeding-edge

* acpi-video:
  ACPI / video: Add HP EliteBook Revolve 810 to the blacklist
ACPI / utils: remove a pointless NULL check

"element" can't be NULL because it is the address of a struct member.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
ACPI / proc: remove unneeded NULL check

We already verified that "ldev" was non-NULL earlier and also we
dereference again without checking a three lines later.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
ACPI / battery: Fix incorrect sscanf() string in acpi_battery_init_alarm()

Fix incorrect sscanf() string in acpi_battery_init_alarm().
Change from %ld to %lu, because 'x' is unsigned long.

Signed-off-by: Luis G.F <luisgf@luisgf.es>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Merge branch 'acpi-cleanup' into bleeding-edge

* acpi-cleanup:
  ACPI / battery: Fix incorrect sscanf() string in acpi_battery_init_alarm()
  ACPI / proc: remove unneeded NULL check
  ACPI / utils: remove a pointless NULL check