usb: host: ohci: fix sfr kernel warning in ohci-at91 driver

The USB Host Controller driver 'ohci-at91.c' reads a Special Function
Register - OHCI Interrupt Configuration Register (AT91_SFR_OHCIICR)
for bits SUSPEND_A/B/C. These bits are defined in sama5d2 alone, so
sfr register mapping is done with compatible string "atmel,sama5d2-sfr".
This gives a kernel warning 'failed to find sfr node' with non sama5d2
cpus which is removed here, thus leaving it up to having a proper DTS.

Signed-off-by: Prasanthi Chellakumar <prasanthi.chellakumar@microchip.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/host/ohci-at91.c

@@ -212,7 +212,7 @@ static int usb_hcd_at91_probe(const struct hc_driver *driver,
 
 	ohci_at91->sfr_regmap = at91_dt_syscon_sfr();
 	if (!ohci_at91->sfr_regmap)
-		dev_warn(dev, "failed to find sfr node\n");
+		dev_dbg(dev, "failed to find sfr node\n");
 
 	board = hcd->self.controller->platform_data;
 	ohci = hcd_to_ohci(hcd);