mtd: rawnand: s3c2410: Add documentation for 2 missing struct members

Correct 'controller' typo while we're at it.

Fixes the following W=1 kernel build warning(s):

 drivers/mtd/nand/raw/s3c2410.c:172: warning: Function parameter or member 'controller' not described in 's3c2410_nand_info'
 drivers/mtd/nand/raw/s3c2410.c:172: warning: Function parameter or member 'freq_transition' not described in 's3c2410_nand_info'

Cc: Miquel Raynal <miquel.raynal@bootlin.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Vignesh Raghavendra <vigneshr@ti.com>
Cc: Kukjin Kim <kgene@kernel.org>
Cc: Krzysztof Kozlowski <krzk@kernel.org>
Cc: Ben Dooks <ben@simtec.co.uk>
Cc: linux-mtd@lists.infradead.org
Cc: linux-samsung-soc@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20201109182206.3037326-18-lee.jones@linaro.org

drivers/mtd/nand/raw/s3c2410.c

@@ -134,7 +134,8 @@ enum s3c_nand_clk_state {
 
 /**
  * struct s3c2410_nand_info - NAND controller state.
- * @mtds: An array of MTD instances on this controoler.
+ * @controller: Base controller structure.
+ * @mtds: An array of MTD instances on this controller.
  * @platform: The platform data for this board.
  * @device: The platform device we bound to.
  * @clk: The clock resource for this controller.
@@ -146,6 +147,7 @@ enum s3c_nand_clk_state {
  * @clk_rate: The clock rate from @clk.
  * @clk_state: The current clock state.
  * @cpu_type: The exact type of this controller.
+ * @freq_transition: CPUFreq notifier block
  */
 struct s3c2410_nand_info {
 	/* mtd info */