core/hmi: Do not display FIR details if none of the bits are set.

So that we don't flood OPAL console logs with information that is not
useful.

Signed-off-by: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>

core/hmi.c

@@ -346,6 +346,9 @@ static bool decode_core_fir(struct cpu_thread *cpu,
 		return false;
 	}
 
+	if (!core_fir)
+		return false;
+
 	prlog(PR_INFO, "CHIP ID: %x, CORE ID: %x, FIR: %016llx\n",
 			cpu->chip_id, core_id, core_fir);