pinctrl: zynq: Fix kernel doc warnings

This patch fixes the kernel doc warnings in the driver.
Signed-off-by: Nava kishore Manne <navam@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/pinctrl-zynq.c

@@ -45,7 +45,7 @@
  * @syscon:		Syscon regmap
  * @pctrl_offset:	Offset for pinctrl into the @syscon space
  * @groups:		Pingroups
- * @ngroupos:		Number of @groups
+ * @ngroups:		Number of @groups
  * @funcs:		Pinmux functions
  * @nfuncs:		Number of @funcs
  */