Fixes gcc '-Wunused-but-set-variable' warning:
drivers/gpu/drm/amd/amdgpu/nv.c: In function 'nv_common_early_init':
drivers/gpu/drm/amd/amdgpu/nv.c:471:7: warning:
 variable 'psp_enabled' set but not used [-Wunused-but-set-variable]
It's not used since inroduction in
commit 
c6b6a42175f5 ("drm/amdgpu: add navi10 common ip block (v3)")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
 
 static int nv_common_early_init(void *handle)
 {
-       bool psp_enabled = false;
        struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 
        adev->smc_rreg = NULL;
 
        adev->asic_funcs = &nv_asic_funcs;
 
-       if (amdgpu_device_ip_get_ip_block(adev, AMD_IP_BLOCK_TYPE_PSP) &&
-           (amdgpu_ip_block_mask & (1 << AMD_IP_BLOCK_TYPE_PSP)))
-               psp_enabled = true;
-
        adev->rev_id = nv_get_rev_id(adev);
        adev->external_rev_id = 0xff;
        switch (adev->asic_type) {