util/crc32: don't drop the const qualifier

Signed-off-by: Grazvydas Ignotas <notasas@gmail.com>
Reviewed-by: Eric Engestrom <eric.engestrom@imgtec.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>

src/util/crc32.c

@@ -111,7 +111,7 @@ util_crc32_table[256] = {
 uint32_t
 util_hash_crc32(const void *data, size_t size)
 {
-   uint8_t *p = (uint8_t *)data;
+   const uint8_t *p = data;
    uint32_t crc = 0xffffffff;
  
    while (size--)