ARM: hisi: select HAVE_ARM_SCU only for SMP

The SCU code does not build unless we are compiling
an SMP kernel. This does the same as every other
platform with an SCU.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Haojian Zhuang <haojian.zhuang@gmail.com>

arch/arm/mach-hisi/Kconfig

@@ -4,7 +4,7 @@ config ARCH_HI3xxx
 	select ARM_GIC
 	select ARM_TIMER_SP804
 	select CACHE_L2X0
-	select HAVE_ARM_SCU
+	select HAVE_ARM_SCU if SMP
 	select HAVE_ARM_TWD if SMP
 	select PINCTRL
 	select PINCTRL_SINGLE