msm: camera: core: validation of session/device/link handle

This change is to validate session, device and link handle.
Also, checks whether the device handle belongs to
correct session handle or not.

CRs-Fixed: 3496553
Change-Id: I6b86bf7d0908a280e90e085a3b3e1727facdf8c6
Signed-off-by: Karthik Dillibabu <quic_kard@quicinc.com>

include/uapi/camera/media/cam_req_mgr.h

@@ -50,6 +50,9 @@
 #define CAM_REQ_MGR_MAX_HANDLES_V2        256
 #define MAX_LINKS_PER_SESSION             2
 
+/* Interval for cam_info_rate_limit_custom() */
+#define CAM_RATE_LIMIT_INTERVAL_5SEC 5
+
 /* V4L event type which user space will subscribe to */
 #define V4L_EVENT_CAM_REQ_MGR_EVENT       (V4L2_EVENT_PRIVATE_START + 0)