[roll] Roll fuchsia [spi] Set default scheduler role for dw-spi and spi

Set default_dispatcher_scheduler_role on the dw-spi and spi drivers.
This allows boards to assign a deadline scheduler profile to the SPI
bus when it serves latency-sensitive peripherals such as touch input.

Summary of improvements and testing:
- Together with board-level deadline profiles, prevents fair scheduler
  preemption during synchronous SPI transfers on the touch interrupt
  path.
- Under 4-core CPU saturation, reduces touch wakeup latency from p90
  301 us / p99 1,551 us to p90 29 us / p99 124 us, brings single-tap
  touch processing latency to p50 301 us / p90 368 us (down from p50
  472 us / p90 720 us at baseline), and reduces missed/corrupted touch
  transfers (IO_DATA_INTEGRITY errors) to 0%.
- Tested with 60-second continuous touch tapping traces under 4-core
  CPU saturation.

Test: 60s touch tapping traces under 4-core CPU load
Original-Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1863337
Original-Original-Revision: e4a1c651bb5363a6c4aaa77b34ae1e41fe882304
GitOrigin-RevId: 6acd8ba2cd7750b89024867e255eeeff694f84ae
Change-Id: I0d9af1367cce9f3889154b9b78aeb0d9b344c5ff
Reviewed-on: https://fuchsia-review.googlesource.com/c/integration/+/1877500
Cr-Commit-Position: refs/heads/main@{#205108}