soc/intel/alderlake: Fix function pointer type

const void is not a proper return type for a function. It's the
function pointer themselves that need to be const.

This fixes building with clang.

Change-Id: I99888ab9d9d80f1d6edb33b9f4a3f556f211a6e2
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/62178
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
diff --git a/src/soc/intel/alderlake/fsp_params.c b/src/soc/intel/alderlake/fsp_params.c
index 90e6ab2..dac3693 100644
--- a/src/soc/intel/alderlake/fsp_params.c
+++ b/src/soc/intel/alderlake/fsp_params.c
@@ -799,7 +799,7 @@
 	/* Override settings per board if required. */
 	mainboard_update_soc_chip_config(config);
 
-	const void (*fill_fsps_params[])(FSP_S_CONFIG *s_cfg,
+	void (*const fill_fsps_params[])(FSP_S_CONFIG *s_cfg,
 			const struct soc_intel_alderlake_config *config) = {
 		fill_fsps_lpss_params,
 		fill_fsps_cpu_params,