[media] cx25821: Replace struct memcpy with struct assignment
[media] cx25821: Replace struct memcpy with struct assignment

Copying structs by assignment is type safe.
Plus, is shorter and easier to read.

Signed-off-by: Ezequiel Garcia <057714f5d85e38d86c9180c386346d25104e71f6@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <ad86ba2154032c9f55743a190faa2459a9d61d42@redhat.com>

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