hw/cxl: Fix size of constant in interleave granularity function.

Whilst the interleave granularity is always small enough that this isn't
a real problem (much less than 4GiB) let's change the constant
to ULL to fix the coverity warning.

Reported-by: Peter Maydell <peter.maydell@linaro.org>
Fixes: 829de29 ("hw/cxl/component: Add utils for interleave parameter encoding/decoding")
Fixes: Coverity CID 1488868
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Message-Id: <20220701132300.2264-4-Jonathan.Cameron@huawei.com>
Acked-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

include/hw/cxl/cxl_component.h

@@ -215,7 +215,7 @@ uint8_t cxl_interleave_granularity_enc(uint64_t gran, Error **errp);
 
 static inline hwaddr cxl_decode_ig(int ig)
 {
-    return 1 << (ig + 8);
+    return 1ULL << (ig + 8);
 }
 
 CXLComponentState *cxl_get_hb_cstate(PCIHostState *hb);