Revert " arch: arm: omap4: bump 307MHz GPU to 384MHz without increasing the vo…"

This reverts commit 924ae5fa702eead3e4b346ce74fc4603b7c71b72.
enable live oc
setup sr 1.5
arch: omap: export current IVA clock to userspace, make GPU+IVA exports match
similar to scaling_cur_freq, gpu_cur_freq and iva_cur_freq
update temp threshold to francos