usb: dwc2: gadget: write correct value in ahbcfg register

HBstLen is GAHBCFG[4:1]. Use GAHBCFG_HBSTLEN_SHIFT to write burst-
length at correct position.

Tested-by: Robert Baldyga <r.baldyga@samsung.com>
Acked-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

drivers/usb/dwc2/gadget.c

@@ -2160,7 +2160,7 @@ void s3c_hsotg_core_init_disconnected(struct dwc2_hsotg *hsotg)
 
 	if (using_dma(hsotg))
 		writel(GAHBCFG_GLBL_INTR_EN | GAHBCFG_DMA_EN |
-		       GAHBCFG_HBSTLEN_INCR4,
+		       (GAHBCFG_HBSTLEN_INCR4 << GAHBCFG_HBSTLEN_SHIFT),
 		       hsotg->regs + GAHBCFG);
 	else
 		writel(((hsotg->dedicated_fifos) ? (GAHBCFG_NP_TXF_EMP_LVL |