Integrate gf-emc-test-suite/add_LICENSE.txt

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Commit: seco-ne/tools/gf-emc-test-suite@f37ded55

LICENSE: Add Apache 2.0 license file

According to our company licensing policy for software the Yocto layers
should be licensed under the Apache 2.0 license.
Adapt the LICENSE-2.0.txt file from https://www.apache.org/licenses/LICENSE-2.0.txt
as described in the APPENDIX.

Add the license as LICENSE.txt file to the layer repository.

BCS 746-000657

SRCREV.conf

@@ -2,7 +2,7 @@ SRCREV_pn-gf-productiontests = "1eaf4aacdeb14eeca312e74c3a16400b57798274"
 SRCREV_pn-gfeeprom = "da91b5d97d419975d31a95e8f13e4bc83ee613d4"
 SRCREV_pn-guf-show-demo = "37a24e09e0296ba6d876e624efa8507a45742115"
 SRCREV_pn-libmdb = "9178541cb51fb4a29b6529bc88197410ad37546d"
-SRCREV_pn-ltp-guf-tests = "bc254697d7fc04a2f8fe1ac49031c1a193659373"
+SRCREV_pn-ltp-guf-tests = "f37ded557554fb75489eafee2c3609109e0128a0"
 SRCREV_pn-touchcal-conv = "c65ad458c51dda68551205ab7d26a1ff4f08cea5"
 SRCREV_pn-gfxml2dto = "a6c91245d6ce82890a950ef95b339f34f36a58a3"
 SRCREV_pn-egalaxi2c = "eacee19fe2bf02c8a00e25eb4494390d03c3cedd"