input: rpcmouse: use __iomem pointers for MMIO

ARM is moving to stricter checks on readl/write functions,
so we need to use the correct types everywhere.

Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: linux-input@vger.kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

drivers/input/mouse/rpcmouse.c

@@ -42,7 +42,7 @@ static irqreturn_t rpcmouse_irq(int irq, void *dev_id)
 
 	x = (short) iomd_readl(IOMD_MOUSEX);
 	y = (short) iomd_readl(IOMD_MOUSEY);
-	b = (short) (__raw_readl(0xe0310000) ^ 0x70);
+	b = (short) (__raw_readl(IOMEM(0xe0310000)) ^ 0x70);
 
 	dx = x - rpcmouse_lastx;
 	dy = y - rpcmouse_lasty;