Merge tag 'arm-ffa-updates-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git...

Merge tag 'arm-ffa-updates-5.16' of git://git./linux/kernel/git/sudeep.holla/linux into arm/drivers

Arm FF-A updates for v5.16

Just couple of minor updates:
- Adding support for MEMORY_LEND API
- Handling compatibility with different firmware versions(especially
  dealing with newer/higher versions than the one supported by the driver)

* tag 'arm-ffa-updates-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux:
  firmware: arm_ffa: Remove unused 'compat_version' variable
  firmware: arm_ffa: Add support for MEM_LEND
  firmware: arm_ffa: Handle compatibility with different firmware versions
  firmware: arm_ffa: Fix __ffa_devices_unregister
  firmware: arm_ffa: Add missing remove callback to ffa_bus_type

Link: https://lore.kernel.org/r/20211026141535.1920602-1-sudeep.holla@arm.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>