usb: s3c-otg: Rename struct s3c_plat_otg_data

The driver is actually for the Designware DWC2 controller.
This patch is the first to rename global symbol, the struct
s3c_plat_otg_data.

The rename is done automatically:
	$ sed -i "s/s3c_plat_otg_data/dwc2_plat_otg_data/g" \
		`git grep s3c_plat_otg_data | cut -d : -f 1`

Signed-off-by: Marek Vasut <marex@denx.de>

board/denx/mcvevk/socfpga.c

@@ -28,7 +28,7 @@ int board_init(void)
 }
 
 #ifdef CONFIG_USB_GADGET
-struct s3c_plat_otg_data socfpga_otg_data = {
+struct dwc2_plat_otg_data socfpga_otg_data = {
 	.regs_otg	= CONFIG_USB_DWC2_REG_ADDR,
 	.usb_gusbcfg	= 0x1417,
 };