mmc: dw_mmc: remove the deprecated "num-slots"

'num-slots' property had already deprecated.
Remove the 'nom-slots' property that is kept to maintain the compatibility.
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

Documentation/devicetree/bindings/mmc/synopsys-dw-mshc.txt

@@ -59,11 +59,6 @@ Optional properties:
   is specified and the ciu clock is specified then we'll try to set the ciu
   clock to this at probe time.
 
-* num-slots (DEPRECATED): specifies the number of slots supported by the controller.
-  The number of physical slots actually used could be equal or less than the
-  value specified by num-slots. If this property is not specified, the value
-  of num-slot property is assumed to be 1.
-
 * fifo-depth: The maximum size of the tx/rx fifo's. If this property is not
   specified, the default value of the fifo size is determined from the
   controller registers.

drivers/mmc/host/dw_mmc-pci.c

@@ -29,7 +29,6 @@
 				MMC_CAP_SDIO_IRQ)
 
 static struct dw_mci_board pci_board_data = {
-	.num_slots			= 1,
 	.caps				= DW_MCI_CAPABILITIES,
 	.bus_hz				= 33 * 1000 * 1000,
 	.detect_delay_ms		= 200,

drivers/mmc/host/dw_mmc.c

@@ -3126,10 +3126,6 @@ static struct dw_mci_board *dw_mci_parse_dt(struct dw_mci *host)
 			return ERR_PTR(-EPROBE_DEFER);
 	}
 
-	/* find out number of slots supported */
-	if (!device_property_read_u32(dev, "num-slots", &pdata->num_slots))
-		dev_info(dev, "'num-slots' was deprecated.\n");
-
 	if (device_property_read_u32(dev, "fifo-depth", &pdata->fifo_depth))
 		dev_info(dev,
 			 "fifo-depth property not found, using value of FIFOTH register as default\n");

drivers/mmc/host/dw_mmc.h

@@ -251,8 +251,6 @@ struct dma_pdata;
 
 /* Board platform data */
 struct dw_mci_board {
-	u32 num_slots;
-
 	unsigned int bus_hz; /* Clock speed at the cclk_in pad */
 
 	u32 caps;	/* Capabilities */