Modify a data structure into a union.

The new 6.0 kernel headers changed all variable length
structures from [0] to []. This causes a clang warning to
trigger, so rewrite the affected data structure using a
union to avoid having a variable sized array in the middle
of the structure.

Test: Builds.
Change-Id: I60c6d31a93566c4aa9f7501f39f88543ee76ce91
1 file changed