media: intel/ipu6: move some boot messages to debug level

media: intel/ipu6: move some boot messages to debug level

When ipu6 driver is waiting for the ivsc driver to probe,
which can fail or take long time, we can get plenty of ipu6
messages like this:

[   15.454049] intel-ipu6 0000:00:05.0: IPU6 in non-secure mode touch 0x0 mask 0xff
[   15.456600] intel-ipu6 0000:00:05.0: FW version: 20230925
[   15.458292] intel-ipu6 0000:00:05.0: IPU6 in non-secure mode touch 0x0 mask 0xff
[   15.461186] intel-ipu6 0000:00:05.0: FW version: 20230925
[   15.463616] intel-ipu6 0000:00:05.0: IPU6 in non-secure mode touch 0x0 mask 0xff
[   15.466490] intel-ipu6 0000:00:05.0: FW version: 20230925

Print them only when debugging is enabled to do not flood dmesg.

Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>