staging: dgap: Change GFP_ATOMICs to GFP_KERNEL

We don't need to use GFP_ATOMIC at driver load time
so use GFP_KERNEL instead.

Signed-off-by: Mark Hounschell <markh@compro.net>
Tested-by: Mark Hounschell <markh@compro.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>