drm/amdgpu: Clean up errors in vcn_v4_0.c

Fix the following errors reported by checkpatch:

spaces required around that '==' (ctx:VxV)
ERROR: space required before the open parenthesis '('
ERROR: that open brace { should be on the previous line
Signed-off-by: Ran Sun <sunran001@208suo.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/vcn_v4_0.c

@@ -1139,11 +1139,11 @@ static int vcn_v4_0_start(struct amdgpu_device *adev)
 				if (status & 2)
 					break;
 				mdelay(10);
-				if (amdgpu_emu_mode==1)
+				if (amdgpu_emu_mode == 1)
 					msleep(1);
 			}
 
-			if (amdgpu_emu_mode==1) {
+			if (amdgpu_emu_mode == 1) {
 				r = -1;
 				if (status & 2) {
 					r = 0;
@@ -1959,7 +1959,7 @@ static int vcn_v4_0_set_powergating_state(void *handle, enum amd_powergating_sta
 		return 0;
 	}
 
-	if(state == adev->vcn.cur_state)
+	if (state == adev->vcn.cur_state)
 		return 0;
 
 	if (state == AMD_PG_STATE_GATE)
@@ -1967,7 +1967,7 @@ static int vcn_v4_0_set_powergating_state(void *handle, enum amd_powergating_sta
 	else
 		ret = vcn_v4_0_start(adev);
 
-	if(!ret)
+	if (!ret)
 		adev->vcn.cur_state = state;
 
 	return ret;
@@ -2101,8 +2101,7 @@ static const struct amd_ip_funcs vcn_v4_0_ip_funcs = {
 	.set_powergating_state = vcn_v4_0_set_powergating_state,
 };
 
-const struct amdgpu_ip_block_version vcn_v4_0_ip_block =
-{
+const struct amdgpu_ip_block_version vcn_v4_0_ip_block = {
 	.type = AMD_IP_BLOCK_TYPE_VCN,
 	.major = 4,
 	.minor = 0,