accel/ivpu: PM: remove broken ivpu_dbg() statements

When CONFIG_PM is disabled, the driver fails to build:

drivers/accel/ivpu/ivpu_pm.c: In function 'ivpu_rpm_get':
drivers/accel/ivpu/ivpu_pm.c:240:84: error: 'struct dev_pm_info' has no member named 'usage_count'
  240 |         ivpu_dbg(vdev, RPM, "rpm_get count %d\n", atomic_read(&vdev->drm.dev->power.usage_count));
      |                                                                                    ^
include/linux/dynamic_debug.h:223:29: note: in definition of macro '__dynamic_func_call_cls'
  223 |                 func(&id, ##__VA_ARGS__);                       \
      |                             ^~~~~~~~~~~
include/linux/dynamic_debug.h:249:9: note: in expansion of macro '_dynamic_func_call_cls'
  249 |         _dynamic_func_call_cls(_DPRINTK_CLASS_DFLT, fmt, func, ##__VA_ARGS__)
      |         ^~~~~~~~~~~~~~~~~~~~~~
include/linux/dynamic_debug.h:272:9: note: in expansion of macro '_dynamic_func_call'
  272 |         _dynamic_func_call(fmt, __dynamic_dev_dbg,              \
      |         ^~~~~~~~~~~~~~~~~~
include/linux/dev_printk.h:155:9: note: in expansion of macro 'dynamic_dev_dbg'
  155 |         dynamic_dev_dbg(dev, dev_fmt(fmt), ##__VA_ARGS__)
      |         ^~~~~~~~~~~~~~~
drivers/accel/ivpu/ivpu_drv.h:65:17: note: in expansion of macro 'dev_dbg'
   65 |                 dev_dbg((vdev)->drm.dev, "[%s] " fmt, #type, ##args);          \
      |                 ^~~~~~~
drivers/accel/ivpu/ivpu_pm.c:240:9: note: in expansion of macro 'ivpu_dbg'
  240 |         ivpu_dbg(vdev, RPM, "rpm_get count %d\n", atomic_read(&vdev->drm.dev->power.usage_count));
      |         ^~~~~~~~

It would be possible to rework these statements to only conditionally print
the reference counter, or to make the driver depend on CONFIG_PM, but my
impression is that these are not actually needed at all if the driver generally
works, or they could be put back when required. Just remove all four of these
to make the driver build in all configurations.

Fixes: 852be13f ("accel/ivpu: Add PM support")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
Signed-off-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230126163804.3648051-1-arnd@kernel.org