media: atomisp: Remove unused mipi_frame_size field from atomisp_[sub_]device

Both the atomisp_device and the atomisp_sub_device structs have
an unused mipi_frame_size field, remove the field from both.
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

drivers/staging/media/atomisp/pci/atomisp_fops.c

@@ -448,7 +448,6 @@ static void atomisp_dev_init_struct(struct atomisp_device *isp)
 	unsigned int i;
 
 	isp->isp_fatal_error = false;
-	isp->mipi_frame_size = 0;
 
 	for (i = 0; i < isp->input_cnt; i++)
 		isp->inputs[i].asd = NULL;
@@ -478,7 +477,6 @@ static void atomisp_subdev_init_struct(struct atomisp_sub_device *asd)
 	/* Add for channel */
 	asd->input_curr = 0;
 
-	asd->mipi_frame_size = 0;
 	asd->copy_mode = false;
 
 	asd->stream_prepared = false;

drivers/staging/media/atomisp/pci/atomisp_internal.h

@@ -211,7 +211,6 @@ struct atomisp_device {
 
 	spinlock_t lock; /* Protects asd.streaming */
 
-	unsigned int mipi_frame_size;
 	const struct atomisp_dfs_config *dfs;
 	unsigned int hpll_freq;
 	unsigned int running_freq;

drivers/staging/media/atomisp/pci/atomisp_subdev.h

@@ -304,8 +304,6 @@ struct atomisp_sub_device {
 
 	unsigned int latest_preview_exp_id; /* CSS ZSL/SDV raw buffer id */
 
-	unsigned int mipi_frame_size;
-
 	bool copy_mode; /* CSI2+ use copy mode */
 
 	int raw_buffer_bitmap[ATOMISP_MAX_EXP_ID / 32 +