NFC: Remove DMA allocation and stack use in write

Removed DMA use in NFC kernel driver to stop boot time crash
and use memdup_user to copy buffer from user in the write
function instead of using stack memory.

CRs-Fixed: 993292
Change-Id: Id2eefdf34e1393da2a0357478c55d7b4716b0818
Signed-off-by: Puneet Mishra <puneetm@codeaurora.org>