spidev: A few cleanups

Merge series from Andy Shevchenko <andriy.shevchenko@linux.intel.com>:

A few cleanups to the spidev.c to utilize existing APIs and make it
use less amount of Lines of Code. No functional change intended.
This commit is contained in:
Mark Brown 2023-09-11 20:32:57 +01:00
commit 7a4feff714
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