fbdev/ps3fb: Build without kernel device

Use fb_info() to print status message at the end of the probe function,
which avoids decoding the devices. fb_info() works with or without an
fbdev kernel device. Fixes the following error:

../drivers/video/fbdev/ps3fb.c: In function 'ps3fb_probe':
../drivers/video/fbdev/ps3fb.c:1172:40: error: 'struct fb_info' has no member named 'dev'
 1172 |                  dev_driver_string(info->dev), dev_name(info->dev),
      |                                        ^~
../include/linux/dev_printk.h:110:37: note: in definition of macro 'dev_printk_index_wrap'
  110 |                 _p_func(dev, fmt, ##__VA_ARGS__);                       \
      |                                     ^~~~~~~~~~~
../drivers/video/fbdev/ps3fb.c:1171:9: note: in expansion of macro 'dev_info'
 1171 |         dev_info(info->device, "%s %s, using %u KiB of video memory\n",
      |         ^~~~~~~~
../drivers/video/fbdev/ps3fb.c:1172:61: error: 'struct fb_info' has no member named 'dev'
 1172 |                  dev_driver_string(info->dev), dev_name(info->dev),
      |                                                             ^~
../include/linux/dev_printk.h:110:37: note: in definition of macro 'dev_printk_index_wrap'
  110 |                 _p_func(dev, fmt, ##__VA_ARGS__);                       \
      |                                     ^~~~~~~~~~~
../drivers/video/fbdev/ps3fb.c:1171:9: note: in expansion of macro 'dev_info'
 1171 |         dev_info(info->device, "%s %s, using %u KiB of video memory\n",
      |         ^~~~~~~~

Reported-by: Randy Dunlap <rdunlap@infradead.org>
Closes: https://lore.kernel.org/lkml/ccc63065-2976-88ef-1211-731330bf2866@infradead.org/
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Fixes: 701d2054

 ("fbdev: Make support for userspace interfaces configurable")
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Helge Deller <deller@gmx.de>
Cc: Javier Martinez Canillas <javierm@redhat.com>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Bagas Sanjaya <bagasdotme@gmail.com>
Cc: Thorsten Leemhuis <regressions@leemhuis.info>
Cc: dri-devel@lists.freedesktop.org
Cc: linux-fbdev@vger.kernel.org
Cc: linuxppc-dev@lists.ozlabs.org
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org> # build-tested
Link: https://patchwork.freedesktop.org/patch/msgid/20230731175535.11345-1-tzimmermann@suse.de