Avoid P2P/SMX race conditions in NXP stack.

Google Wallet can trigger off field P2P field events
and initiate communication with the SMX. The NXP stack
appears to contain some tricky race conditions around
opening/closing the SMX close to P2P interactions. For now,
do not allow NFCEE access while a P2P link is still active.

Bug: 8552749
Change-Id: I7acae39bc22cebb5d79a484990dcd3fc5f3dad23
2 files changed