helpers-qmi: fix UMTS band 6 and 19 definitions
Also bump required libqmi version, as this change uses flags from the latest available API.
UMTS B19 is NTT DoCoMo's 800MHz band. UMTS B6 is NTT DoCoMo's 850MHz band
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Also bump required libqmi version, as this change uses flags from the latest available API.
UMTS B19 is NTT DoCoMo's 800MHz band. UMTS B6 is NTT DoCoMo's 850MHz band