regmap: trivial comment fix (copy'n'paste error)

fix a trivial copy'n'paste error in the regmap kerneldoc, s/write/read/
for the regmap_read(), regmap_raw_read() and regmap_bulk_read() routines

Signed-off-by: Gerhard Sittig <gsi@denx.de>
Signed-off-by: Mark Brown <broonie@linaro.org>
diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c
index 9c021d9..f441084 100644
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -1743,7 +1743,7 @@
 /**
  * regmap_read(): Read a value from a single register
  *
- * @map: Register map to write to
+ * @map: Register map to read from
  * @reg: Register to be read from
  * @val: Pointer to store read value
  *
@@ -1770,7 +1770,7 @@
 /**
  * regmap_raw_read(): Read raw data from the device
  *
- * @map: Register map to write to
+ * @map: Register map to read from
  * @reg: First register to be read from
  * @val: Pointer to store read value
  * @val_len: Size of data to read
@@ -1882,7 +1882,7 @@
 /**
  * regmap_bulk_read(): Read multiple registers from the device
  *
- * @map: Register map to write to
+ * @map: Register map to read from
  * @reg: First register to be read from
  * @val: Pointer to store read value, in native register size for device
  * @val_count: Number of registers to read