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There are few places that repeat the logic of "read some bits from SSSR".
Extract read_SSSR_bits() helper to deduplicate that.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20210510124134.24638-13-andriy.shevchenko@linux.intel.com

Signed-off-by: Mark Brown <broonie@kernel.org>