spi: cadence-qspi: Remove redundant pm_runtime_mark_last_busy call

spi: cadence-qspi: Remove redundant pm_runtime_mark_last_busy call

The pm_runtime_mark_last_busy() call is redundant in probe function
as pm_runtime_put_autosuspend() already calls pm_runtime_mark_last_busy()
internally to update the last access time of the device before queuing
autosuspend.

Remove the pm_runtime_mark_last_busy() call from the probe function.

Tested on StarFive VisionFive 2 v1.2A board.

Fixes: e1f2e77624db ("spi: cadence-qspi: Fix runtime PM imbalance in probe")
Signed-off-by: Akif Ejaz <akifejaz40@gmail.com>
Link: https://patch.msgid.link/20251203181921.97171-1-akifejaz40@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>