usb: renesas_usbhs: make usbhs_write32() static
The usbhs_write32 function is not used outside of the rcar3.c file, so fix the following sparse warning by making it static: drivers/usb/renesas_usbhs/rcar3.c:26:6: warning: symbol 'usbhs_write32' was not declared. Should it be static? Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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