[PATCH] Video: fb, kzalloc changes

Use kzalloc instead of kmalloc + memset(0).

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Cc: James Simmons <jsimmons@infradead.org>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>