[PATCH for v3.5] cx25821: Remove bad strcpy to read-only char*

[Ezequiel Garcia]

Hi Linus,

I'm sending the attached patch directly to you for inclusion in 3.5 as
without it the cx25821 driver will panic on probe.

It looks like this bug has been around since cx25821 was first mainlined,
so it could make sense to consider its inclusion in stable also.

Since Mauro is still on vacation, I'm sending directly to you so
this can be merged for 3.5 before it is released.

Thanks,
Ezequiel.