soc/intel/cannonlake: Keep variable from going out of scope

The variable p was going out of scope while still being pointed to by
*cpu_name.

Fix coverity ID 1378215 (Pointer to local outside scope)

Change-Id: I6ad7b1919104b4d97869efe5065e39c2a43de638
Signed-off-by: Martin Roth <martinroth@google.com>
Reviewed-on: https://review.coreboot.org/20682
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Lijian Zhao <lijian.zhao@intel.com>

src/soc/intel/cannonlake/bootblock/report_platform.c

@@ -68,13 +68,13 @@ static void report_cpu_info(void)
 	msr_t microcode_ver;
 	static const char * const mode[] = {"NOT ", ""};
 	const char *cpu_type = "Unknown";
+	u32 p[13];
 
 	index = 0x80000000;
 	cpuidr = cpuid(index);
 	if (cpuidr.eax < 0x80000004) {
 		strcpy(cpu_string, "Platform info not available");
 	} else {
-		u32 p[13];
 		int j=0;
 
 		for (i = 2; i <= 4; i++) {