ARM: mmp: add a pxa-usb-phy device

This is to replace the USB PHY initialization code (pxa_usb_phy_init(),
pxa_usb_phy_deinit()) with a proper PHY driver.

Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Signed-off-by: Olof Johansson <olof@lixom.net>

arch/arm/mach-mmp/pxa910.h

@@ -22,6 +22,7 @@ extern struct pxa_device_desc pxa910_device_pwm2;
 extern struct pxa_device_desc pxa910_device_pwm3;
 extern struct pxa_device_desc pxa910_device_pwm4;
 extern struct pxa_device_desc pxa910_device_nand;
+extern struct platform_device pxa168_device_usb_phy;
 extern struct platform_device pxa168_device_u2o;
 extern struct platform_device pxa168_device_u2ootg;
 extern struct platform_device pxa168_device_u2oehci;