pinctrl: keembay: Fix func conversion in keembay_build_functions()

A recent refactoring to use the func member in struct function_desc
missed converting one uses of name in keembay_build_functions(),
resulting in a build failure:

  drivers/pinctrl/pinctrl-keembay.c: In function 'keembay_build_functions':
  drivers/pinctrl/pinctrl-keembay.c:1630:35: error: 'struct function_desc' has no member named 'name'
   1630 |                         if (!fdesc->name) {
        |                                   ^~

Perform the same conversion to resolve the build error.

Fixes: 73ee522 ("pinctrl: keembay: Convert to use func member")
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Andy Shevchenko <andy@kernel.org>
Link: https://lore.kernel.org/r/20240611-pinctrl-keembay-fix-func-conversion-v1-1-3197f2ded3f7@kernel.org
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202406131133.WwdetfBL-lkp@intel.com/
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

Author: nathanchance

drivers/pinctrl/pinctrl-keembay.c

@@ -1627,7 +1627,7 @@ static int keembay_build_functions(struct keembay_pinctrl *kpc)
 			}
 
 			/* Setup new function for this mux we didn't see before */
-			if (!fdesc->name) {
+			if (!fdesc->func.name) {
 				fdesc->func.name = mux->name;
 				fdesc->func.ngroups = 1;
 				fdesc->data = &mux->mode;