drm/amdkfd: use correct method to get clock under SRIOV

[What]
Current SRIOV still using adev->clock.default_XX which gets from
atomfirmware. But these fields are abandoned in atomfirmware long ago.
Which may cause function to return a 0 value.

[How]
We don't need to check whether SR-IOV. For SR-IOV one-vf-mode,
pm is enabled and VF is able to read dpm clock
from pmfw, so we can use dpm clock interface directly. For
multi-VF mode, VF pm is disabled, so driver can just react as pm
disabled. One-vf-mode is introduced from GFX9 so it shall not have
any backward compatibility issue.

Signed-off-by: Horace Chen <[email protected]>
Acked-by: Felix Kuehling <[email protected]>
(cherry picked from commit 6ee9227)

Change-Id: I38927b9c19b06b96ccb7013669f27a36154c3034
(cherry picked from commit 6bbd176400bcdeadc4eef1fee009ec9bd352ed4a)

drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c

@@ -456,9 +456,7 @@ void amdgpu_amdkfd_get_local_mem_info(struct amdgpu_device *adev,
 			mem_info->local_mem_size_public,
 			mem_info->local_mem_size_private);
 
-	if (amdgpu_sriov_vf(adev))
-		mem_info->mem_clk_max = adev->clock.default_mclk / 100;
-	else if (adev->pm.dpm_enabled) {
+	if (adev->pm.dpm_enabled) {
 		if (amdgpu_emu_mode == 1)
 			mem_info->mem_clk_max = 0;
 		else
@@ -477,9 +475,7 @@ uint64_t amdgpu_amdkfd_get_gpu_clock_counter(struct amdgpu_device *adev)
 uint32_t amdgpu_amdkfd_get_max_engine_clock_in_mhz(struct amdgpu_device *adev)
 {
 	/* the sclk is in quantas of 10kHz */
-	if (amdgpu_sriov_vf(adev))
-		return adev->clock.default_sclk / 100;
-	else if (adev->pm.dpm_enabled)
+	if (adev->pm.dpm_enabled)
 		return amdgpu_dpm_get_sclk(adev, false) / 100;
 	else
 		return 100;