usb: gadget: remove u32 castings of address passed to readl()

Removes a couple of:
|drivers/usb/gadget/s3c-hsudc.c: In function 's3c_hsudc_epin_intr':
|drivers/usb/gadget/s3c-hsudc.c:438:2: warning: passing argument 1 of '__raw_readl' makes pointer from integer without a cast
|arch/arm/include/asm/io.h:104:19: note: expected 'const volatile void *' but argument is of type 'unsigned int'

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
diff --git a/drivers/usb/gadget/s3c-hsudc.c b/drivers/usb/gadget/s3c-hsudc.c
index d2b8791..4a3d620 100644
--- a/drivers/usb/gadget/s3c-hsudc.c
+++ b/drivers/usb/gadget/s3c-hsudc.c
@@ -435,7 +435,7 @@
 	struct s3c_hsudc_req *hsreq;
 	u32 csr;
 
-	csr = readl((u32)hsudc->regs + S3C_ESR);
+	csr = readl(hsudc->regs + S3C_ESR);
 	if (csr & S3C_ESR_STALL) {
 		writel(S3C_ESR_STALL, hsudc->regs + S3C_ESR);
 		return;
@@ -468,7 +468,7 @@
 	struct s3c_hsudc_req *hsreq;
 	u32 csr;
 
-	csr = readl((u32)hsudc->regs + S3C_ESR);
+	csr = readl(hsudc->regs + S3C_ESR);
 	if (csr & S3C_ESR_STALL) {
 		writel(S3C_ESR_STALL, hsudc->regs + S3C_ESR);
 		return;
@@ -901,12 +901,12 @@
 	if (list_empty(&hsep->queue) && !hsep->stopped) {
 		offset = (ep_index(hsep)) ? S3C_ESR : S3C_EP0SR;
 		if (ep_is_in(hsep)) {
-			csr = readl((u32)hsudc->regs + offset);
+			csr = readl(hsudc->regs + offset);
 			if (!(csr & S3C_ESR_TX_SUCCESS) &&
 				(s3c_hsudc_write_fifo(hsep, hsreq) == 1))
 				hsreq = NULL;
 		} else {
-			csr = readl((u32)hsudc->regs + offset);
+			csr = readl(hsudc->regs + offset);
 			if ((csr & S3C_ESR_RX_SUCCESS)
 				   && (s3c_hsudc_read_fifo(hsep, hsreq) == 1))
 				hsreq = NULL;