[PATCH] ARM: imx6: fix SMP compilation again

[Arnd Bergmann]

My earlier patch 1fc593feaf8e ("ARM: imx: build i.MX6 functions
only when needed") fixed a problem with building an i.MX5 kernel,
but missed the corner case of building a kernel for i.MX5 with
SMP enabled. It is an extremely rare case that has only now
happened after many thousands of randconfig kernel builds.

The error message I get is
arch/arm/mach-imx/built-in.o: In function `v7_secondary_startup':
:(.text+0x5124): undefined reference to `v7_invalidate_l1'

This puts the code inside of an "ifdef CONFIG_SMP" to hopefully
do the right thing in all configurations.

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

diff --git a/arch/arm/mach-imx/Makefile b/arch/arm/mach-imx/Makefile
index ac88599ca080..23c02932bf84 100644
--- a/arch/arm/mach-imx/Makefile
+++ b/arch/arm/mach-imx/Makefile
@@ -93,9 +93,11 @@ obj-$(CONFIG_HAVE_IMX_ANATOP) += anatop.o
 obj-$(CONFIG_HAVE_IMX_GPC) += gpc.o
 obj-$(CONFIG_HAVE_IMX_MMDC) += mmdc.o
 obj-$(CONFIG_HAVE_IMX_SRC) += src.o
+ifdef CONFIG_SOC_IMX6
 AFLAGS_headsmp.o :=-Wa,-march=armv7-a
 obj-$(CONFIG_SMP) += headsmp.o platsmp.o
 obj-$(CONFIG_HOTPLUG_CPU) += hotplug.o
+endif
 obj-$(CONFIG_SOC_IMX6Q) += clk-imx6q.o mach-imx6q.o
 obj-$(CONFIG_SOC_IMX6SL) += clk-imx6sl.o mach-imx6sl.o
 obj-$(CONFIG_SOC_IMX6SX) += clk-imx6sx.o mach-imx6sx.o