gk20a_pmu_disable_elpg can be called before the PMU driver has
received and processed the INIT message from the PMU. If change
ensures that the ELPG ref-count has been initialized to zero
before that can happen.
Bug 200016313
Change-Id: Ic80ec1ee69b1eb0499effb1abf556f78cb041f5e
Signed-off-by: Neil Gabriel <ngabriel@nvidia.com>
Reviewed-on: http://git-master/r/429161
Reviewed-on: http://git-master/r/433299
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Robert Shih <rshih@nvidia.com>
Tested-by: Robert Shih <rshih@nvidia.com>
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>