video: fbdev: Fix wrong file path for pvr2fb.c in Kconfig help text

pvr2fb.c should be under drivers/video/fbdev/
instead of drivers/video/

Signed-off-by: Wei Ming Chen <jj251510319013@gmail.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Helge Deller <deller@gmx.de>

drivers/video/fbdev/Kconfig

@@ -829,7 +829,7 @@ config FB_PVR2
 	  You can pass several parameters to the driver at boot time or at
 	  module load time.  The parameters look like "video=pvr2:XXX", where
 	  the meaning of XXX can be found at the end of the main source file
-	  (<file:drivers/video/pvr2fb.c>). Please see the file
+	  (<file:drivers/video/fbdev/pvr2fb.c>). Please see the file
 	  <file:Documentation/fb/pvr2fb.rst>.
 
 config FB_OPENCORES