mynewt: Enable EATT for GATT tests

[piotrnarajowski]

Enable EATT for GATT tests. Fixes GATT/CL/GAN/BV-02-C

[piotrnarajowski]

#AutoPTS run mynewt GATT/CL

[codecoup-tester]

Scheduled PR #https://github.com/auto-pts/auto-pts/pull/1162#issuecomment-2107862056 after 16:55:53.

[codecoup-tester]

AutoPTS Bot results:

Failed tests

GATT GATT/CL/GAD/BV-01-C INCONC
GATT GATT/CL/GAD/BV-02-C UNKNOWN VERDICT: Timeout. Adjust TSPX_time_guard value if user need more time.
GATT GATT/CL/GAD/BV-03-C INCONC
GATT GATT/CL/GAD/BV-04-C UNKNOWN VERDICT: Timeout. Adjust TSPX_time_guard value if user need more time.
GATT GATT/CL/GAD/BV-05-C UNKNOWN VERDICT: Timeout. Adjust TSPX_time_guard value if user need more time.
GATT GATT/CL/GAD/BV-06-C UNKNOWN VERDICT: Timeout. Adjust TSPX_time_guard value if user need more time.
GATT GATT/CL/GAR/BI-13-C INCONC
GATT GATT/CL/GAR/BI-36-C INCONC
GATT GATT/CL/GAR/BI-38-C INCONC
GATT GATT/CL/GAR/BI-42-C INCONC
GATT GATT/CL/GAR/BI-44-C INCONC
GATT GATT/CL/GAR/BV-05-C INCONC

Successful tests

GATT GATT/CL/GAC/BV-01-C PASS
GATT GATT/CL/GAI/BI-01-C PASS
GATT GATT/CL/GAI/BV-01-C PASS
GATT GATT/CL/GAN/BV-01-C PASS
GATT GATT/CL/GAN/BV-02-C PASS
GATT GATT/CL/GAR/BI-01-C PASS
GATT GATT/CL/GAR/BI-02-C PASS
GATT GATT/CL/GAR/BI-04-C PASS
GATT GATT/CL/GAR/BI-05-C PASS
GATT GATT/CL/GAR/BI-06-C PASS (2)
GATT GATT/CL/GAR/BI-07-C PASS
GATT GATT/CL/GAR/BI-10-C PASS
GATT GATT/CL/GAR/BI-11-C PASS
GATT GATT/CL/GAR/BI-12-C PASS
GATT GATT/CL/GAR/BI-14-C PASS (2)
GATT GATT/CL/GAR/BI-16-C PASS
GATT GATT/CL/GAR/BI-17-C PASS
GATT GATT/CL/GAR/BI-18-C PASS
GATT GATT/CL/GAR/BI-19-C PASS
GATT GATT/CL/GAR/BI-21-C PASS
GATT GATT/CL/GAR/BI-22-C PASS
GATT GATT/CL/GAR/BI-35-C PASS
GATT GATT/CL/GAR/BV-01-C PASS
GATT GATT/CL/GAR/BV-03-C PASS
GATT GATT/CL/GAR/BV-04-C PASS
GATT GATT/CL/GAR/BV-06-C PASS
GATT GATT/CL/GAR/BV-07-C PASS
GATT GATT/CL/GAR/BV-08-C PASS
GATT GATT/CL/GAR/BV-10-C PASS
GATT GATT/CL/GAS/BV-01-C PASS
GATT GATT/CL/GAT/BV-01-C PASS
GATT GATT/CL/GAT/BV-02-C PASS
GATT GATT/CL/GAT/BV-03-C PASS
GATT GATT/CL/GAW/BI-02-C PASS
GATT GATT/CL/GAW/BI-03-C PASS
GATT GATT/CL/GAW/BI-05-C PASS
GATT GATT/CL/GAW/BI-06-C PASS
GATT GATT/CL/GAW/BI-07-C PASS
GATT GATT/CL/GAW/BI-08-C PASS
GATT GATT/CL/GAW/BI-09-C PASS
GATT GATT/CL/GAW/BI-12-C PASS
GATT GATT/CL/GAW/BI-13-C PASS
GATT GATT/CL/GAW/BI-32-C PASS
GATT GATT/CL/GAW/BI-33-C PASS
GATT GATT/CL/GAW/BI-34-C PASS
GATT GATT/CL/GAW/BV-01-C PASS (2)
GATT GATT/CL/GAW/BV-03-C PASS (2)
GATT GATT/CL/GAW/BV-05-C PASS
GATT GATT/CL/GAW/BV-06-C PASS
GATT GATT/CL/GAW/BV-08-C PASS
GATT GATT/CL/GAW/BV-09-C PASS

[piotrnarajowski]

@mkasenberg please review