board: gateworks: gw_ventana: fix building with GCC 12.2

Building with GCC 12.2 results in an error

    board/gateworks/gw_ventana/gw_ventana.c:636:68: error: the comparison
    will always evaluate as 'true' for the address of 'pwm_padmux' will
    never be NULL [-Werror=address]
      636 |                 } else if (hwconfig_subarg_cmp(arg, "mode", "pwm") &&
          |                                                                    ^~

Remove the superfluous check.

Signed-off-by: Heinrich Schuchardt <[email protected]>
Reviewed-By: Tim Harvey <[email protected]>
Reviewed-by: Fabio Estevam <[email protected]>

board/gateworks/gw_ventana/gw_ventana.c

@@ -633,8 +633,7 @@ void setup_board_gpio(int board, struct ventana_board_info *info)
 					       ctrl);
 			gpio_requestf(cfg->gpio_param, "dio%d", i);
 			gpio_direction_input(cfg->gpio_param);
-		} else if (hwconfig_subarg_cmp(arg, "mode", "pwm") &&
-			   cfg->pwm_padmux) {
+		} else if (hwconfig_subarg_cmp(arg, "mode", "pwm")) {
 			if (!cfg->pwm_param) {
 				printf("DIO%d:  Error: pwm config invalid\n",
 				       i);