Merge tag 'ffa-fix-7.1' of https://git.kernel.org/pub/scm/linux/kernel/git/sudeep...

Arm FF-A fix for v7.1

Use the page aligned backing allocation size when computing the RXTX_MAP
page count. This fixes FF-A RX/TX buffer registration on kernels built
with 16K/64K PAGE_SIZE, where alloc_pages_exact() backs the buffer with a
larger aligned span than the discovered minimum buffer size.

* tag 'ffa-fix-7.1' of https://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux:
  firmware: arm_ffa: Use the correct buffer size during RXTX_MAP

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>