cx25840: treat firmware data as const
cx25840: treat firmware data as const

Signed-off-by: David Woodhouse <97b3379caa91f4ee97e44013ae4dc6350540fa9d@infradead.org>
Acked-by: Hans Verkuil <f625be9dbdcbbd12a043857af148e8fb895d9a1d@xs4all.nl>
Acked-by: Tyler Trafford <0dc824c79d4af5940d1d2117b28b87a4a460f3a2@gmail.com>
Acked-by: Mike Isely <2ea935d8c40c107fcce175c9ba49ff51e4d69087@pobox.com>

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