Integrate gf-emc-test-suite/pbb-testcase

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Commit: seco-ne/tools/gf-emc-test-suite@e40b72b7

ltp emc-testsuite: tr8mp-pbb testfiles

Add testfiles for immunity and emission file and add comments how to disable the
serial debug port.
Add relay test as script.

BCS 746-001210

SRCREV.conf

 SRCREV:pn-atmel-mxt = "9dc5f338bd0fd410772d53d8a22b8dee78572b66"
 SRCREV:pn-egalaxi2c = "a23bb0dea048d51321200eb4cff54eb1b73d43e4"
-SRCREV:pn-emc-test-suite = "1c0f42a7d68eedb810fc43710fc60599dcc7d102"
+SRCREV:pn-emc-test-suite = "e40b72b74eab34ab2b9c0549b482568491398764"
 SRCREV:pn-gf-productiontests = "b48ccf70ddd4e2d17a353e9d5b2ab2410e41f70e"
 SRCREV:pn-gfeeprom = "53466fc1f020b3d5053509c16c706ffc13606cf0"
 SRCREV:pn-gfplatdetect = "bd0859846268b97e266b04409c7d347e9e6d08ab"