ASoC: fsl: fsl_qmc_audio: Fix issues detected by checkpatch

ASoC: fsl: fsl_qmc_audio: Fix issues detected by checkpatch

./scripts/checkpatch.pl --strict --codespell detected several issues
when running on the fsl_qmc_audio.c file:
  - CHECK: spaces preferred around that '*' (ctx:VxV)
  - CHECK: Alignment should match open parenthesis
  - CHECK: Comparison to NULL could be written "!prtd"
  - CHECK: spaces preferred around that '/' (ctx:VxV)
  - CHECK: Lines should not end with a '('
  - CHECK: Please don't use multiple blank lines
Some of them are present several times.

Fix all of these issues without any functional changes.

Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Link: https://patch.msgid.link/20240701113038.55144-3-herve.codina@bootlin.com
Signed-off-by: Mark Brown <broonie@kernel.org>