pinctrl: bcm/cygnys/iproc: fixup rebase issue

Somehow this variable name screwed up in some rebase, fixed it.

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Reported-by: Pramod Kumar <pramodku@broadcom.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>