V4L/DVB: v4l: fsl-viu.c: add slab.h include to fix compile breakage
V4L/DVB: v4l: fsl-viu.c: add slab.h include to fix compile breakage

mpc512x kernel configurations without SPI support do not build:

drivers/media/video/fsl-viu.c: In function 'viu_open':
drivers/media/video/fsl-viu.c:1248: error: implicit declaration of function 'kzalloc'
drivers/media/video/fsl-viu.c:1248: warning: assignment makes pointer from integer without a cast
drivers/media/video/fsl-viu.c: In function 'viu_release':
drivers/media/video/fsl-viu.c:1335: error: implicit declaration of function 'kfree'

If CONFIG_SPI is enabled, the slab.h will be included in
linux/spi/spi.h which is included by media/v4l2-common.h
and the fsl_viu.c driver builds.

Let's incluce linux/slab.h directly to fix the build breakage.

Signed-off-by: Anatolij Gustschin <f79f5d5f0b8928b7f49f0262a90d53ad98a87c22@denx.de>
Signed-off-by: Mauro Carvalho Chehab <ad86ba2154032c9f55743a190faa2459a9d61d42@redhat.com>

KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs