[PATCH] cpu: fix section mismatch warnings for enable_nonboot_cpus

[Sam Ravnborg]

Fix following warning:
WARNING: o-x86_64/kernel/built-in.o(.text+0x36d8b): Section mismatch in reference from the function enable_nonboot_cpus() to the function .cpuinit.text:_cpu_up()

enable_nonboot_cpus() are used solely from CONFIG_CONFIG_PM_SLEEP_SMP=y
and PM_SLEEP_SMP imply HOTPLUG_CPU therefore the reference
to _cpu_up() is valid.
Annotate enable_nonboot_cpus() with __ref to silence modpost.

Signed-off-by: Sam Ravnborg <sam@xxxxxxxxxxxx>
Cc: Gautham R Shenoy <ego@xxxxxxxxxx>
---
 kernel/cpu.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/kernel/cpu.c b/kernel/cpu.c
index e0d3a4f..2eff3f6 100644
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -389,7 +389,7 @@ int disable_nonboot_cpus(void)
 	return error;
 }
 
-void enable_nonboot_cpus(void)
+void __ref enable_nonboot_cpus(void)
 {
 	int cpu, error;
 
-- 
1.5.4.rc3.14.g44397

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