[media] s5p-mfc: Bug fix of timestamp/timecode copy mechanism

Modified the function s5p_mfc_get_dec_y_adr_v6 to access the
decode Y address register instead of display Y address.

Signed-off-by: Sunil Mazhavanchery <sunilm@samsung.com>
Signed-off-by: Arun Kumar K <arun.kk@samsung.com>
Acked-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/platform/s5p-mfc/s5p_mfc_opr_v6.c

@@ -1762,7 +1762,7 @@ int s5p_mfc_get_dspl_y_adr_v6(struct s5p_mfc_dev *dev)
 
 int s5p_mfc_get_dec_y_adr_v6(struct s5p_mfc_dev *dev)
 {
-	return mfc_read(dev, S5P_FIMV_D_DISPLAY_LUMA_ADDR_V6);
+	return mfc_read(dev, S5P_FIMV_D_DECODED_LUMA_ADDR_V6);
 }
 
 int s5p_mfc_get_dspl_status_v6(struct s5p_mfc_dev *dev)