If actual_freq of gpu is not updated when a gpu floor is set, TZ is unaware of the gpu frequency change and computations are based on an incorrect value. By setting actual_freq, TZ is notified of the new gpu frequency at the next idle exit. Change-Id: Ifc69996ef309ed4f8a5d46a2048757e57dd1a8ec Signed-off-by: Steve Muckle <smuckle@codeaurora.org> (cherry picked from commit 81599d50a0d122c52c966279640d6d8c64def656)