media: platform: fix some 64-bits warnings

The omap/omap3 and viu drivers are for 32 bit platforms only.
There, a pointer has 32 bits. Now that those drivers build
for 64 bits with COMPILE_TEST, they produce the following
warnings:

drivers/media/platform/omap/omap_vout_vrfb.c: In function 'omap_vout_allocate_vrfb_buffers':
drivers/media/platform/omap/omap_vout_vrfb.c:57:10: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
   memset((void *) vout->smsshado_virt_addr[i], 0,
          ^
drivers/media/platform/fsl-viu.c: In function 'viu_setup_preview':
drivers/media/platform/fsl-viu.c:753:28: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
  reg_val.field_base_addr = (u32)dev->ovbuf.base;
                            ^
drivers/media/platform/omap/omap_vout.c: In function 'omap_vout_get_userptr':
drivers/media/platform/omap/omap_vout.c:209:25: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
   *physp = virt_to_phys((void *)virtp);
                         ^
drivers/media/platform/omap3isp/ispccdc.c: In function 'ccdc_config':
drivers/media/platform/omap3isp/ispccdc.c:738:9: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
         (__force void __user *)fpc.fpcaddr,
         ^

Add some typecasts to remove those warnings when building for
64 bits.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

drivers/media/platform/fsl-viu.c

@@ -750,7 +750,7 @@ static int viu_setup_preview(struct viu_dev *dev, struct viu_fh *fh)
 	reg_val.status_cfg |= DMA_ACT | INT_DMA_END_EN | INT_FIELD_EN;
 
 	/* setup the base address of the overlay buffer */
-	reg_val.field_base_addr = (u32)dev->ovbuf.base;
+	reg_val.field_base_addr = (u32)(long)dev->ovbuf.base;
 
 	return 0;
 }

drivers/media/platform/omap/omap_vout.c

@@ -198,7 +198,7 @@ static int omap_vout_try_format(struct v4l2_pix_format *pix)
  * omap_vout_get_userptr: Convert user space virtual address to physical
  * address.
  */
-static int omap_vout_get_userptr(struct videobuf_buffer *vb, u32 virtp,
+static int omap_vout_get_userptr(struct videobuf_buffer *vb, long virtp,
 				 u32 *physp)
 {
 	struct frame_vector *vec;

drivers/media/platform/omap/omap_vout_vrfb.c

@@ -54,8 +54,8 @@ static int omap_vout_allocate_vrfb_buffers(struct omap_vout_device *vout,
 			*count = 0;
 			return -ENOMEM;
 		}
-		memset((void *) vout->smsshado_virt_addr[i], 0,
-				vout->smsshado_size);
+		memset((void *)(long)vout->smsshado_virt_addr[i], 0,
+		       vout->smsshado_size);
 	}
 	return 0;
 }

drivers/media/platform/omap3isp/ispccdc.c

@@ -735,7 +735,7 @@ static int ccdc_config(struct isp_ccdc_device *ccdc,
 				return -ENOMEM;
 
 			if (copy_from_user(fpc_new.addr,
-					   (__force void __user *)fpc.fpcaddr,
+					   (__force void __user *)(long)fpc.fpcaddr,
 					   size)) {
 				dma_free_coherent(isp->dev, size, fpc_new.addr,
 						  fpc_new.dma);