ASoC: ti: Cleanup locking code using guard() helpers

ASoC: ti: Cleanup locking code using guard() helpers

phucduc.bui@gmail.com <phucduc.bui@gmail.com> says:

This series converts mutex and spinlock handling in TI ASoC drivers
to use guard() helpers.

Most patches are straightforward conversions to guard() helpers.
Two patches include minor cleanup changes in the process:

omap-dmic: Simplified omap_dmic_dai_startup() by removing the
temporary return variable and using a direct return path on error.

omap-mcbsp: Modernized omap_mcbsp_request() by using __free(kfree)
for memory management. This ensures that memory is always freed on
error paths after the spinlock is released, without needing manual
goto labels.

No behavior change intended.

Link: https://patch.msgid.link/20260508103837.138142-1-phucduc.bui@gmail.com