regmap: Implemented default cache sync operation
regmap: Implemented default cache sync operation

This can be used for cache types for which syncing values one by one is
equally efficient as syncing a range, such as the flat cache.

Signed-off-by: Maarten ter Huurne <e186a7d2c4e55136cd884424bcfb439491001dc6@treewalker.org>
Signed-off-by: Mark Brown <b51b9a92386687a9ac927cebfa0f978adeb8cea5@linaro.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs