tests/multi_bluetooth/ble_gap_advertise: Fix bytes/str compare warning.
tests/multi_bluetooth/ble_gap_advertise: Fix bytes/str compare warning.

tobbad/micropython,kerneltask/micropython,adafruit/circuitpython,bvernoux/micropython,pramasoul/micropython,henriknelson/micropython,bvernoux/micropython,henriknelson/micropython,pramasoul/micropython,tobbad/micropython,MrSurly/micropython,bvernoux/micropython,MrSurly/micropython,adafruit/circuitpython,kerneltask/micropython,tobbad/micropython,MrSurly/micropython,MrSurly/micropython,adafruit/circuitpython,adafruit/circuitpython,bvernoux/micropython,kerneltask/micropython,adafruit/circuitpython,selste/micropython,selste/micropython,pramasoul/micropython,henriknelson/micropython,bvernoux/micropython,kerneltask/micropython,adafruit/circuitpython,MrSurly/micropython,kerneltask/micropython,selste/micropython,selste/micropython,pramasoul/micropython,henriknelson/micropython,henriknelson/micropython,tobbad/micropython,tobbad/micropython,selste/micropython,pramasoul/micropython