pinctrl: samsung: pinctrl-s3c64xx: Fix formatting issues

Kerneldoc struct titles must be followed by whitespace else the
checker gets confused.

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

 drivers/pinctrl/samsung/pinctrl-s3c64xx.c:212: warning: cannot understand function prototype: 'struct s3c64xx_eint0_domain_data '

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Cc: Tomasz Figa <tomasz.figa@gmail.com>
Cc: Krzysztof Kozlowski <krzk@kernel.org>
Cc: Sylwester Nawrocki <s.nawrocki@samsung.com>
Cc: linux-samsung-soc@vger.kernel.org
Link: https://lore.kernel.org/r/20200713144930.1034632-9-lee.jones@linaro.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/samsung/pinctrl-s3c64xx.c

@@ -193,7 +193,7 @@ static const struct samsung_pin_bank_type bank_type_2bit_alive = {
 	}
 
 /**
- * struct s3c64xx_eint0_data: EINT0 common data
+ * struct s3c64xx_eint0_data - EINT0 common data
  * @drvdata: pin controller driver data
  * @domains: IRQ domains of particular EINT0 interrupts
  * @pins: pin offsets inside of banks of particular EINT0 interrupts
@@ -205,7 +205,7 @@ struct s3c64xx_eint0_data {
 };
 
 /**
- * struct s3c64xx_eint0_domain_data: EINT0 per-domain data
+ * struct s3c64xx_eint0_domain_data - EINT0 per-domain data
  * @bank: pin bank related to the domain
  * @eints: EINT0 interrupts related to the domain
  */
@@ -215,7 +215,7 @@ struct s3c64xx_eint0_domain_data {
 };
 
 /**
- * struct s3c64xx_eint_gpio_data: GPIO EINT data
+ * struct s3c64xx_eint_gpio_data - GPIO EINT data
  * @drvdata: pin controller driver data
  * @domains: array of domains related to EINT interrupt groups
  */