Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/drivers/acpi/acpica/utdelete.c b/drivers/acpi/acpica/utdelete.c
index 8cc4392..eee263c 100644
--- a/drivers/acpi/acpica/utdelete.c
+++ b/drivers/acpi/acpica/utdelete.c
@@ -257,6 +257,10 @@
 
 			acpi_ut_delete_object_desc(second_desc);
 		}
+		if (object->field.internal_pcc_buffer) {
+			ACPI_FREE(object->field.internal_pcc_buffer);
+		}
+
 		break;
 
 	case ACPI_TYPE_BUFFER_FIELD: