HdmiCecControl: Allow specifying CEC numerical codes directly
HdmiCecControl: Allow specifying CEC numerical codes directly

This allows you to get to the reserved numbers (maybe some manufacturers
have implemented some of them) or to implement your own string->keycode
mapping.

stb-tester/stb-tester,LewisHaley/stb-tester,LewisHaley/stb-tester,LewisHaley/stb-tester,stb-tester/stb-tester,stb-tester/stb-tester,LewisHaley/stb-tester,stb-tester/stb-tester,LewisHaley/stb-tester,LewisHaley/stb-tester,LewisHaley/stb-tester