pinctrl: artpec6: fix __iomem on reg in set

The artpec6_pconf_set should have marked reg as __iomem,
 which ends up making sparse complain about address
space conversions. Add the __iomem to silence the
following warnings:

drivers/pinctrl/pinctrl-artpec6.c:814:13: warning: incorrect type in assignment (different address spaces)
drivers/pinctrl/pinctrl-artpec6.c:814:13:    expected unsigned int *reg
drivers/pinctrl/pinctrl-artpec6.c:814:13:    got void [noderef] <asn:2> *
drivers/pinctrl/pinctrl-artpec6.c:825:34: warning: incorrect type in argument 1 (different address spaces)
drivers/pinctrl/pinctrl-artpec6.c:825:34:    expected void const volatile [noderef] <asn:2> *addr
drivers/pinctrl/pinctrl-artpec6.c:825:34:    got unsigned int *reg
drivers/pinctrl/pinctrl-artpec6.c:827:25: warning: incorrect type in argument 2 (different address spaces)
drivers/pinctrl/pinctrl-artpec6.c:827:25:    expected void volatile [noderef] <asn:2> *addr
drivers/pinctrl/pinctrl-artpec6.c:827:25:    got unsigned int *reg
drivers/pinctrl/pinctrl-artpec6.c:837:34: warning: incorrect type in argument 1 (different address spaces)
drivers/pinctrl/pinctrl-artpec6.c:837:34:    expected void const volatile [noderef] <asn:2> *addr
drivers/pinctrl/pinctrl-artpec6.c:837:34:    got unsigned int *reg
drivers/pinctrl/pinctrl-artpec6.c:840:25: warning: incorrect type in argument 2 (different address spaces)
drivers/pinctrl/pinctrl-artpec6.c:840:25:    expected void volatile [noderef] <asn:2> *addr
drivers/pinctrl/pinctrl-artpec6.c:840:25:    got unsigned int *reg
drivers/pinctrl/pinctrl-artpec6.c:850:34: warning: incorrect type in argument 1 (different address spaces)
drivers/pinctrl/pinctrl-artpec6.c:850:34:    expected void const volatile [noderef] <asn:2> *addr
drivers/pinctrl/pinctrl-artpec6.c:850:34:    got unsigned int *reg
drivers/pinctrl/pinctrl-artpec6.c:853:25: warning: incorrect type in argument 2 (different address spaces)
drivers/pinctrl/pinctrl-artpec6.c:853:25:    expected void volatile [noderef] <asn:2> *addr
drivers/pinctrl/pinctrl-artpec6.c:853:25:    got unsigned int *reg
drivers/pinctrl/pinctrl-artpec6.c:864:34: warning: incorrect type in argument 1 (different address spaces)
drivers/pinctrl/pinctrl-artpec6.c:864:34:    expected void const volatile [noderef] <asn:2> *addr
drivers/pinctrl/pinctrl-artpec6.c:864:34:    got unsigned int *reg
drivers/pinctrl/pinctrl-artpec6.c:867:25: warning: incorrect type in argument 2 (different address spaces)
drivers/pinctrl/pinctrl-artpec6.c:867:25:    expected void volatile [noderef] <asn:2> *addr
drivers/pinctrl/pinctrl-artpec6.c:867:25:    got unsigned int *reg

Signed-off-by: Ben Dooks (Codethink) <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
[Changed unsigned int -> void for the reg pointer]
Signed-off-by: Linus Walleij <[email protected]>

Author: bjdooks-ct

drivers/pinctrl/pinctrl-artpec6.c

@@ -798,7 +798,7 @@ static int artpec6_pconf_set(struct pinctrl_dev *pctldev, unsigned int pin,
 	enum pin_config_param param;
 	unsigned int arg;
 	unsigned int regval;
-	unsigned int *reg;
+	void __iomem *reg;
 	int i;
 
 	/* Check for valid pin */