ARM: mmp: avoid unused functions

mach-mmp/devices.c:81:21: warning: 'u2o_get' defined but not used [-Wunused-function]
 static unsigned int u2o_get(void __iomem *base, unsigned int offset)
                     ^
mach-mmp/devices.c:86:13: warning: 'u2o_set' defined but not used [-Wunused-function]
 static void u2o_set(void __iomem *base, unsigned int offset,
             ^
mach-mmp/devices.c:97:13: warning: 'u2o_clear' defined but not used [-Wunused-function]
 static void u2o_clear(void __iomem *base, unsigned int offset,
             ^
mach-mmp/devices.c:108:13: warning: 'u2o_write' defined but not used [-Wunused-function]
 static void u2o_write(void __iomem *base, unsigned int offset,
             ^

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/arm/mach-mmp/devices.c

@@ -73,6 +73,8 @@ int __init pxa_register_device(struct pxa_device_desc *desc,
 }
 
 #if IS_ENABLED(CONFIG_USB) || IS_ENABLED(CONFIG_USB_GADGET)
+#if IS_ENABLED(CONFIG_USB_MV_UDC) || IS_ENABLED(CONFIG_USB_EHCI_MV)
+#if IS_ENABLED(CONFIG_CPU_PXA910) || IS_ENABLED(CONFIG_CPU_PXA168)
 
 /*****************************************************************************
  * The registers read/write routines
@@ -112,9 +114,6 @@ static void u2o_write(void __iomem *base, unsigned int offset,
 	readl_relaxed(base + offset);
 }
 
-#if IS_ENABLED(CONFIG_USB_MV_UDC) || IS_ENABLED(CONFIG_USB_EHCI_MV)
-
-#if IS_ENABLED(CONFIG_CPU_PXA910) || IS_ENABLED(CONFIG_CPU_PXA168)
 
 static DEFINE_MUTEX(phy_lock);
 static int phy_init_cnt;