drm/amdgpu: Fix amdgpu_vm_is_bo_always_valid kerneldoc

Align kerneldoc with the function argument name.
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com>
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Fixes: 26e20235 ("drm/amdgpu: Add amdgpu_bo_is_vm_bo helper")
Cc: Christian König <christian.koenig@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -3008,7 +3008,7 @@ void amdgpu_vm_update_fault_cache(struct amdgpu_device *adev,
  * amdgpu_vm_is_bo_always_valid - check if the BO is VM always valid
  *
  * @vm: VM to test against.
- * @abo: BO to be tested.
+ * @bo: BO to be tested.
  *
  * Returns true if the BO shares the dma_resv object with the root PD and is
  * always guaranteed to be valid inside the VM.