usb: gadget: use dev_get_platdata()

Use the wrapper function for retrieving the platform data instead of
accessing dev->platform_data directly.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

diff --cc drivers/usb/gadget/at91_udc.c
Simple merge

diff --cc drivers/usb/gadget/atmel_usba_udc.c
Simple merge

diff --cc drivers/usb/gadget/bcm63xx_udc.c
Simple merge

diff --cc drivers/usb/gadget/fsl_mxc_udc.c
Simple merge

diff --cc drivers/usb/gadget/fsl_udc_core.c
Simple merge

diff --cc drivers/usb/gadget/hid.c
Simple merge

diff --cc drivers/usb/gadget/m66592-udc.c
Simple merge

diff --cc drivers/usb/gadget/mv_u3d_core.c
Simple merge

diff --cc drivers/usb/gadget/mv_udc_core.c
Simple merge

diff --cc drivers/usb/gadget/omap_udc.c
Simple merge

diff --cc drivers/usb/gadget/pxa25x_udc.c
Simple merge

diff --cc drivers/usb/gadget/pxa27x_udc.c
Simple merge

diff --cc drivers/usb/gadget/r8a66597-udc.c
Simple merge

diff --cc drivers/usb/gadget/s3c-hsotg.c
Simple merge

diff --cc drivers/usb/gadget/s3c-hsudc.c
Simple merge

diff --cc drivers/usb/gadget/s3c2410_udc.c
Simple merge