intel/aubinator: fix 32bit shift overflow warning

Doesn't look like this can work on 32bit, just rids of annoying
warning.

Signed-off-by: Grazvydas Ignotas <notasas@gmail.com>
Reviewed-by: Eduardo Lima Mitev <elima@igalia.com>
diff --git a/src/intel/tools/aubinator.c b/src/intel/tools/aubinator.c
index 5e3a684..e2bec8f 100644
--- a/src/intel/tools/aubinator.c
+++ b/src/intel/tools/aubinator.c
@@ -1297,7 +1297,7 @@
       file = aub_file_open(input_file);
 
    /* mmap a terabyte for our gtt space. */
-   gtt_size = 1ul << 40;
+   gtt_size = 1ull << 40;
    gtt = mmap(NULL, gtt_size, PROT_READ | PROT_WRITE,
               MAP_PRIVATE | MAP_ANONYMOUS |  MAP_NORESERVE, -1, 0);
    if (gtt == MAP_FAILED) {