pinctrl: pinctrl-bm1880: Rename ill documented struct attribute entries

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

drivers/pinctrl/pinctrl-bm1880.c:40: warning: Function parameter or member 'pctrldev' not described in 'bm1880_pinctrl'
drivers/pinctrl/pinctrl-bm1880.c:40: warning: Function parameter or member 'pinconf' not described in 'bm1880_pinctrl'

Signed-off-by: Lee Jones <[e-mail]>
Reviewed-by: Manivannan Sadhasivam <[e-mail]>
Cc: Manivannan Sadhasivam <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Linus Walleij <[e-mail]>

drivers/pinctrl/pinctrl-bm1880.c

···
 /**
  * struct bm1880_pinctrl - driver data
  * @base:	Pinctrl base address
- * @pctrl:	Pinctrl device
+ * @pctrldev:	Pinctrl device
  * @groups:	Pingroups
  * @ngroups:	Number of @groups
  * @funcs:	Pinmux functions
  * @nfuncs:	Number of @funcs
- * @pconf:	Pinconf data
+ * @pinconf:	Pinconf data
  */
 struct bm1880_pinctrl {
 	void __iomem *base;