regmap: Skip precious registers when dumping registers via debugfs

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c
index a3eaef6..d74d306 100644
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -101,6 +101,7 @@
 	map->writeable_reg = config->writeable_reg;
 	map->readable_reg = config->readable_reg;
 	map->volatile_reg = config->volatile_reg;
+	map->precious_reg = config->precious_reg;
 
 	switch (config->reg_bits) {
 	case 4: