soc/intel: Fix invalid use of 'static'

Just keep the variables on the stack.

Change-Id: I36b29d8fb7dac159b29609033cba450bea9adf77
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34326
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>

src/soc/intel/skylake/chip_fsp20.c

@@ -232,7 +232,7 @@ void platform_fsp_silicon_init_params_cb(FSPS_UPD *supd)
 {
 	FSP_S_CONFIG *params = &supd->FspsConfig;
 	FSP_S_TEST_CONFIG *tconfig = &supd->FspsTestConfig;
-	static struct soc_intel_skylake_config *config;
+	struct soc_intel_skylake_config *config;
 	struct device *dev;
 	uintptr_t vbt_data = (uintptr_t)vbt_get();
 	int i;