psp_mailbox_command
ret = psp_mailbox_command(psp, PSP_CMD_TEE_EXTENDED_CMD, (void *)req,
int psp_mailbox_command(struct psp_device *psp, enum psp_cmd cmd, void *cmdbuff,
ret = psp_mailbox_command(tee->psp, PSP_CMD_TEE_RING_INIT, cmd,
ret = psp_mailbox_command(tee->psp, PSP_CMD_TEE_RING_DESTROY, NULL,