loader: do not print the pci id during normal operation

Spamming the pci id is not beneficial. Make sure it's printed
only when needed.

v2: Change severity to _LOADER_DEBUG, rather than removing
the message.

Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>

src/loader/loader.c

@@ -350,7 +350,7 @@ loader_get_driver_for_fd(int fd, unsigned driver_types)
    }
 
 out:
-   log_(driver ? _LOADER_INFO : _LOADER_WARNING,
+   log_(driver ? _LOADER_DEBUG : _LOADER_WARNING,
          "pci id for fd %d: %04x:%04x, driver %s\n",
          fd, vendor_id, chip_id, driver);
    return driver;