drivers: fpga: fix build of ICE40 bitbang with PINCTRL

Fix the build of the ICE40 FPGA bitbang driver with PINCTRL=y.
Fixes #87739.

Signed-off-by: Benedikt Schmidt <[email protected]>

Author: benediktibk

drivers/fpga/fpga_ice40_bitbang.c

@@ -229,7 +229,7 @@ static int fpga_ice40_load(const struct device *dev, uint32_t *image_ptr, uint32
 	(void)gpio_pin_configure_dt(&config_bitbang->clk, GPIO_DISCONNECTED);
 	(void)gpio_pin_configure_dt(&config_bitbang->pico, GPIO_DISCONNECTED);
 #ifdef CONFIG_PINCTRL
-	(void)pinctrl_apply_state(config->pincfg, PINCTRL_STATE_DEFAULT);
+	(void)pinctrl_apply_state(config_bitbang->pincfg, PINCTRL_STATE_DEFAULT);
 #endif /* CONFIG_PINCTRL */
 
 	k_spin_unlock(&data->lock, key);