NFC: trf7970a: Don't turn off RF if its already off
NFC: trf7970a: Don't turn off RF if its already off

Don't try to turn off of RF transmitter is its
already off.

Signed-off-by: Mark A. Greer <2540a8c57225c2058d000de41debc8b502ea4a38@animalcreek.com>
Signed-off-by: Samuel Ortiz <0ba86cb3f08bbb861958e54bd3438887adb4263c@linux.intel.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs