staging: ccree: remove GFP_DMA flag from mem allocs

Remove bogus GFP_DMA flag from memory allocations. ccree driver
does not operate over an ISA or similar limited bus.

Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>