disp: rotator: modify the args for sid switch call

Modify the size of SID's passed as an argument during
scm call as per client requirement.

Change-Id: I84bbd1e034ba6dcd8ded1ddf3913a735a2139663
Signed-off-by: Yashwanth <yvulapu@codeaurora.org>

rotator/sde_rotator_core.c

@@ -572,7 +572,7 @@ static int sde_rotator_secure_session_ctrl(bool enable)
 
 			sid_info = (uint32_t *) shm.vaddr;
 			mem_addr = shm.paddr;
-			mem_size = shm.size;
+			mem_size = sizeof(uint32_t);
 		} else {
 			sid_info = kzalloc(sizeof(uint32_t), GFP_KERNEL);
 			if (!sid_info)