drm/amdgpu: use register distance member instead of hardcode in VCN2/JEPG2

This patch updates to use register distance member instead of hardcode
in VCN2/JEPG2. They are for the same ASIC.
Signed-off-by: Huang Rui <ray.huang@amd.com>
Tested-by: AnZhong Huang <anzhong.huang@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/jpeg_v2_0.c

@@ -629,7 +629,7 @@ void jpeg_v2_0_dec_ring_emit_vm_flush(struct amdgpu_ring *ring,
 	pd_addr = amdgpu_gmc_emit_flush_gpu_tlb(ring, vmid, pd_addr);
 
 	/* wait for register write */
-	data0 = hub->ctx0_ptb_addr_lo32 + vmid * 2;
+	data0 = hub->ctx0_ptb_addr_lo32 + vmid * hub->ctx_addr_distance;
 	data1 = lower_32_bits(pd_addr);
 	mask = 0xffffffff;
 	jpeg_v2_0_dec_ring_emit_reg_wait(ring, data0, data1, mask);

drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c

@@ -1505,7 +1505,7 @@ void vcn_v2_0_dec_ring_emit_vm_flush(struct amdgpu_ring *ring,
 	pd_addr = amdgpu_gmc_emit_flush_gpu_tlb(ring, vmid, pd_addr);
 
 	/* wait for register write */
-	data0 = hub->ctx0_ptb_addr_lo32 + vmid * 2;
+	data0 = hub->ctx0_ptb_addr_lo32 + vmid * hub->ctx_addr_distance;
 	data1 = lower_32_bits(pd_addr);
 	mask = 0xffffffff;
 	vcn_v2_0_dec_ring_emit_reg_wait(ring, data0, data1, mask);
@@ -1660,7 +1660,8 @@ void vcn_v2_0_enc_ring_emit_vm_flush(struct amdgpu_ring *ring,
 	pd_addr = amdgpu_gmc_emit_flush_gpu_tlb(ring, vmid, pd_addr);
 
 	/* wait for reg writes */
-	vcn_v2_0_enc_ring_emit_reg_wait(ring, hub->ctx0_ptb_addr_lo32 + vmid * 2,
+	vcn_v2_0_enc_ring_emit_reg_wait(ring, hub->ctx0_ptb_addr_lo32 +
+					vmid * hub->ctx_addr_distance,
 					lower_32_bits(pd_addr), 0xffffffff);
 }