staging: imx-drm: Array was made static const char * const

This patch fixes checkpatch.pl error in file imx-tve.c
WARNING: static const char * array should probably be static
const char * const

Signed-off-by: Aybuke Ozdemir <aybuke.147@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>