A Saudi princess posted a photo of a prince who has been in a coma for 17 years and requested prayers for his recovery. Saudi Princess Rima bint Talal tweeted a photo of Prince Al-Waleed bin Khaled bin Talal, known as the ‘Sleeping Prince’ alongside his father Khaled bin Talal who refuses to turn off his child’s life support. “May God heal him. My love, may God protect you”, the tweet said. Prince Al-Waleed has been on a ventilator since 2005 after suffering a brain haemorrhage during a car accident while studying at a military college. His father, the brother of billionare Saudi business tyco…