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) <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
[Changed unsigned int -> void for the reg pointer]
Signed-off-by: Linus Walleij <[e-mail]>

drivers/pinctrl/pinctrl-artpec6.c

···
 	enum pin_config_param param;
 	unsigned int arg;
 	unsigned int regval;
-	unsigned int *reg;
+	void __iomem *reg;
 	int i;
 
 	/* Check for valid pin */