nxp: Include support declaration for Mifare tags

Older chipsets requiring the NXP stack are also known to be
compatible with mifare classics, so just push the feature
declaration

Change-Id: I5017cff14ca37b2b7f7b8638de1b58253c0b10e5
(cherry picked from commit 145748544747e4e077916b88f886c89e78afd805)