media: fsl-viu: use %p to print pointers

Solve those warnings:

    drivers/media/platform/fsl-viu.c:299 restart_video_queue() warn: argument 3 to %08lx specifier is cast from pointer
    drivers/media/platform/fsl-viu.c:506 buffer_queue() warn: argument 2 to %08lx specifier is cast from pointer
    drivers/media/platform/fsl-viu.c:518 buffer_queue() warn: argument 2 to %08lx specifier is cast from pointer
    drivers/media/platform/fsl-viu.c:528 buffer_queue() warn: argument 2 to %08lx specifier is cast from pointer
    drivers/media/platform/fsl-viu.c:1219 viu_open() warn: argument 2 to %08lx specifier is cast from pointer
    drivers/media/platform/fsl-viu.c:1219 viu_open() warn: argument 3 to %08lx specifier is cast from pointer
    drivers/media/platform/fsl-viu.c:1219 viu_open() warn: argument 4 to %08lx specifier is cast from pointer
    drivers/media/platform/fsl-viu.c:1329 viu_mmap() warn: argument 2 to %08lx specifier is cast from pointer
    drivers/media/platform/fsl-viu.c:1334 viu_mmap() warn: argument 2 to %08lx specifier is cast from pointer

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>