ANDROID: ABI: refresh, CRC fixups and allowed breaks

The addition of nr_task_refs changed the size of dma_buf, but there is
reserved space available. The inclusion of a new header changed type
visibility, affecting symtype information and MODVERSIONS CRCs.

This change

- moves the new nr_task_refs member of dma_buf into reserved
  padding, preserving the existing structure size and symtype
  information
- hides a new #include in drivers/dma-buf/dma-buf.c from genksyms
- refreshes the ABI
- adds the ABI change to nr_task_refs as an allowed break

Bug: 424648392
Bug: 441733128
Change-Id: I6aa3988f2162f144c9beb19f9092911d37d53a31
Signed-off-by: Giuliano Procida <gprocida@google.com>