msm: camera: isp: Update camera timestamps to ktime API

Old API's returning struct timeval and struct timespec will be
deprecated in future kernel versions as their tv_sec members
will overflow in the year 2038 on 32-bit arhitectures.

CRs-Fixed: 2564616
Change-Id: I6e3e37cf957daca992b66cad1134f49dd78961f5
Signed-off-by: Karthik Jayakumar <kjayakum@codeaurora.org>

drivers/cam_isp/isp_hw_mgr/cam_ife_hw_mgr.c

@@ -2795,7 +2795,7 @@ static int cam_ife_mgr_acquire_hw(void *hw_mgr_priv, void *acquire_hw_args)
 	acquire_args->valid_acquired_hw =
 		acquire_hw_info->num_inputs;
 
-	getnstimeofday64(&ife_ctx->ts);
+	ktime_get_real_ts64(&ife_ctx->ts);
 	CAM_INFO(CAM_ISP,
 		"Acquire HW success with total_pix: %u total_rdi: %u is_dual: %u in ctx: %u",
 		total_pix_port, total_rdi_port,

drivers/cam_isp/isp_hw_mgr/isp_hw/ife_csid_hw/cam_ife_csid_core.c

@@ -3004,7 +3004,7 @@ static int cam_ife_csid_get_time_stamp(
 		CAM_IFE_CSID_QTIMER_DIV_FACTOR);
 
 	if (!csid_hw->prev_boot_timestamp) {
-		get_monotonic_boottime64(&ts);
+		ktime_get_boottime_ts64(&ts);
 		time_stamp->boot_timestamp =
 			(uint64_t)((ts.tv_sec * 1000000000) +
 			ts.tv_nsec);

drivers/cam_isp/isp_hw_mgr/isp_hw/vfe_hw/cam_vfe_core.c

@@ -381,7 +381,7 @@ void cam_isp_hw_get_timestamp(struct cam_isp_timestamp *time_stamp)
 {
 	struct timespec ts;
 
-	get_monotonic_boottime(&ts);
+	ts = ktime_to_timespec(ktime_get_boottime());
 	time_stamp->mono_time.tv_sec    = ts.tv_sec;
 	time_stamp->mono_time.tv_usec   = ts.tv_nsec/1000;
 }