binding: nfc: increase safety checks around neardal api calls.halibut_7.90.0halibut/7.90.0guppy_6.99.4guppy/6.99.47.90.06.99.4

 Bug-AGL: SPEC-2062

 When the NFC adapter is powered up and agl-service-nfc sends a request
 to power it, or when the NFC adapter is actively polling and
 agl-service-nfc sends a request to start polling, the requests are
 being rejected and an error message issued.
 The changes in this commit are intended to avoid these scenarios, taking
 into account that neard is configured to: (1)power the device up by default,
 and (2)not re-start the device in polling mode unless requested by the
 client (agl-service-nfc).
  - Check the adapter state before applying power or set the adapter in
 active polling mode as initiator.
  - Add neardal adapter callbacks to track status of the interface
   instead of using local variables.
  - Exit polling loop if the adapter is removed.
  - Update dbg macros to be more meaningful.

 Bug-AGL: SPEC-1976

 The following changes are to increase safety measures around variables used on
 calls to/from neardal.
  - Test arguments in callback functions.
  - Install/remove tag callbacks in every iteration.
  - Match g_malloc'ed nfc_data_binding with g_free.

Change-Id: If26d685a917633c9a0dd6997ad371db60a640517
Signed-off-by: Raquel Medina <raquel.medina@konsulko.com>

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