usb: dwc_otg_310: fix compile warning

usb: dwc_otg_310: fix compile warning

When build with CONFIG_ARCH_DMA_ADDR_T_64BIT enabled:
drivers/usb/dwc_otg_310/dwc_otg_hcd.c: In function 'assign_and_init_hc':
drivers/usb/dwc_otg_310/dwc_otg_hcd.c:1093:19: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
drivers/usb/dwc_otg_310/dwc_otg_hcd.c:1131:21: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
drivers/usb/dwc_otg_310/dwc_otg_hcd.c:1161:21: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
drivers/usb/dwc_otg_310/dwc_otg_hcd.c:1189:21: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
drivers/usb/dwc_otg_310/dwc_otg_hcd_ddma.c: In function 'init_non_isoc_dma_desc':
drivers/usb/dwc_otg_310/dwc_otg_hcd_ddma.c:632:8: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
drivers/usb/dwc_otg_310/dwc_otg_hcd_intr.c: In function 'handle_hc_ahberr_intr':
drivers/usb/dwc_otg_310/dwc_otg_hcd_intr.c:1699:14: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]

Change-Id: I4159d1d66ce24c97cc8085ee6e0fc4abde8c7423
Signed-off-by: William Wu <wulf@rock-chips.com>
Signed-off-by: Huang, Tao <huangtao@rock-chips.com>
(cherry picked from commit b001ce5aa46de28c1f52c82d1e3c111e172bd5e4)
(cherry picked from commit 4952c8819aa0f0902ae620bf5de18f7a19f85e17)