Rename 'haven' to 'gunyah', 'hh' to 'gh'.
These following words are unchanged becaused of dependency of
hypervisor: 'haven-hypervisor', 'qcom,hh-watchdog',
'qcom,haven-message-queue', 'qcom,gunyah-vm-id'.
Change-Id: I73e9ec0e8c1107fa2278d7f328d0351ab7675a23