usb: gadget: udc: reduce indentation

Delete tab aligning a statement with the right hand side of a
preceding assignment rather than the left hand side.

Found with the help of Coccinelle.
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>

drivers/usb/gadget/udc/snps_udc_core.c

@@ -947,7 +947,6 @@ static int prep_dma(struct udc_ep *ep, struct udc_request *req, gfp_t gfp)
 				UDC_DMA_STP_STS_BS_HOST_READY,
 				UDC_DMA_STP_STS_BS);
 
-
 		/* clear NAK by writing CNAK */
 		if (ep->naking) {
 			tmp = readl(&ep->regs->ctl);