drm/amdgpu: wrong array index to get ip block for PSP

The adev->ip_blocks array is not indexed by AMD_IP_BLOCK_TYPE_xxx,
instead we should call amdgpu_device_ip_get_ip_block() to get the
corresponding IP block oject.

Fix some checkpatch issues (Alex)

Signed-off-by: Jiang Liu <[e-mail]>
Signed-off-by: Alex Deucher <[e-mail]>

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

···
 {
 	struct drm_device *ddev = dev_get_drvdata(dev);
 	struct amdgpu_device *adev = drm_to_adev(ddev);
+	struct amdgpu_ip_block *ip_block;
 	uint32_t fw_ver;
 	int ret;
 
-	if (!adev->ip_blocks[AMD_IP_BLOCK_TYPE_PSP].status.late_initialized) {
+	ip_block = amdgpu_device_ip_get_ip_block(adev, AMD_IP_BLOCK_TYPE_PSP);
+	if (!ip_block || !ip_block->status.late_initialized) {
 		dev_info(adev->dev, "PSP block is not ready yet\n.");
 		return -EBUSY;
 	}
···
 	struct amdgpu_bo *fw_buf_bo = NULL;
 	uint64_t fw_pri_mc_addr;
 	void *fw_pri_cpu_addr;
+	struct amdgpu_ip_block *ip_block;
 
-	if (!adev->ip_blocks[AMD_IP_BLOCK_TYPE_PSP].status.late_initialized) {
+	ip_block = amdgpu_device_ip_get_ip_block(adev, AMD_IP_BLOCK_TYPE_PSP);
+	if (!ip_block || !ip_block->status.late_initialized) {
 		dev_err(adev->dev, "PSP block is not ready yet.");
 		return -EBUSY;
 	}