Print APIC table signatures found

src/hulk/acpi.d

@@ -77,6 +77,12 @@ struct Acpi
             {
                 parse_apic_table(address);
             }
+            Klog.writefln("Found ACPI table %08x (%c%c%c%c)",
+                    signature,
+                    signature & 0xFFu,
+                    (signature >> 8u) & 0xFFu,
+                    (signature >> 16u) & 0xFFu,
+                    (signature >> 24u) & 0xFFu);
         }
     }