Fix code style violation in the variables in BufferHubDefs::MetadataHeader

Violation: variables should be lowerCaseCamel in the following directories:
frameworks/native/libs/ui and frameworks/native/services/bufferhub


Test: m, mma
Bug: 68273829
Change-Id: I7dc56ec17089456f98b018032f04f779b12632b2
9 files changed