[PATCH] pinctrl: fix a discarded-qualifiers build error

[Miles Chen <miles.chen@xxxxxxxxxxxx>]

Fix COMPILER=gcc ARCH=arm64 DEFCONFIG=allyesconfig build:

log:
drivers/pinctrl/pinctrl-thunderbay.c:815:29: error: assignment discards
'const' qualifier from pointer target type [-Werror=discarded-qualifiers]

Fixes: 12422af8194d ("pinctrl: Add Intel Thunder Bay pinctrl driver")
Signed-off-by: Miles Chen <miles.chen@xxxxxxxxxxxx>
---
 drivers/pinctrl/pinctrl-thunderbay.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pinctrl/pinctrl-thunderbay.c b/drivers/pinctrl/pinctrl-thunderbay.c
index b5b47f4dd774..4e6d718c03fc 100644
--- a/drivers/pinctrl/pinctrl-thunderbay.c
+++ b/drivers/pinctrl/pinctrl-thunderbay.c
@@ -812,7 +812,7 @@ static int thunderbay_add_functions(struct thunderbay_pinctrl *tpc, struct funct
 				}
 			}
 
-			grp = func->group_names;
+			grp = (const char **)func->group_names;
 			while (*grp)
 				grp++;
 
-- 
2.18.0