Move default libnfc-nci.conf to system/nfc

Move the default config from device/generic/common/nfc to system/nfc.
If no config is found in the config search path or /product partition,
fallback to use this default config.

Bug: 157704723
Test: Check Settings. NFC still works.
Test: /etc/libnfc-nci.conf is installed
Test: adb shell rm /product/etc/libnfc-nci.conf
Test: Toggle NFC and /etc/libnfc-nci.conf is loaded.
Change-Id: If5759d48aeb6dee498ab9a3b79ae8b18acf69cbb
3 files changed