axolotl: Fix NFC firmware path

After switching to AOSP NFC we have to move NFC firmware to
/vendor/lib64.

Fixes:
D NxpFwDnld: @@@/vendor/lib64/libpn553_fw.so
E NxpFwDnld: NULL handler : unable to load the library file, specify correct path

Change-Id: Ia7d64b81ea0f6c046a753f42a40c5e937f103abe