intel_th: msu: Fix less trivial kernel-doc warnings

intel_th: msu: Fix less trivial kernel-doc warnings

Correct function comments to prevent kernel-doc warnings found when using
"W=1" that the drive-by fixers had trouble documenting and skipped over.

msu.c:168: warning: Function parameter or struct member 'msu_base' not described in 'msc'
msu.c:168: warning: Function parameter or struct member 'work' not described in 'msc'
msu.c:168: warning: Function parameter or struct member 'switch_on_unlock' not described in 'msc'
msu.c:168: warning: Function parameter or struct member 'iter_list' not described in 'msc'
msu.c:168: warning: Function parameter or struct member 'stop_on_full' not described in 'msc'
msu.c:168: warning: Function parameter or struct member 'do_irq' not described in 'msc'
msu.c:168: warning: Function parameter or struct member 'multi_is_broken' not described in 'msc'

Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20250211185017.1759193-3-alexander.shishkin@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>